mechanical engineering capstone project
final year project
project title
power genration by using speed breaker
👇👇👇👇👇👇👇👇👇👇
Friday, 19 November 2021
Friday, 30 July 2021
12th RESULT MAHARASHTRA STATE BOARD DECLARED
12th RESULT MAHARASHTRA STATE BOARD DECLARED
Maharashtra HSC Result 2021 (Releasing Today): All Students Pass, Check Here Maharashtra Board 12th Result
LINK OF RESULT
👆👆👆👆
Maharashtra MSBSHSE HSC Results 2021: After the result are announced, students who have registered for the MSBSHSE Class 12 Exam 2021 will be able to check their results online at mahresult.nic.in. Maharashtra MSBSHSE HSC Results 2021: The Maharashtra State Board of Secondary and Higher Secondary Education (MSBSHSE) will declare for Maharashtra HSC or Class 12 Result 2021 on Saturday, July 31, 2021, on its official website. After the results are announced, students who have registered for the MSBSHSE Class 12 Board Exam 2021 will be able to check their results by visiting the official website of the board at mahresult.nic.in.
In wake of the prevalence of the covid-19 pandemic this year, the Maharashtra Class 12th examination was canceled and it was decided that the board will announce the results by combining the marks of 10th, 11th, and 12th through internal evaluation. According to the evaluation policy, 40% weightage will be given based on the student's performance in all the exams which were conducted in class 12, while 30% weightage each will be given to the student's performance
Maharashtra HSC Result 2021 – Chairman of Maharashtra State Board of Secondary and Higher Secondary Education (MSBSHSE), Dinkar Patil has confirmed the Maharashtra HSC result on July 30. Due to the sudden floods and excessive rainfall in parts of the state, there has been some delay in processing of Maharashtra board 12th result 2021. However, a notification confirming the Maharashtra HSC result 2021 date & time will be provided soon. Students will be able to check their class 12 result online at mahresult.nic.in. To check it, you will need to log in by entering your seat number and mother’s name.
Latest – Maharashtra HSC result 2021 will not be announced on Friday, i.e on July 30 as various media reports suggested. This has been confirmed by Dinkar Patil, Chairman of Maharashtra State Board of Secondary and Higher Secondary Education (MSBSHSE). The processing of the result has been delayed due to sudden floods and excessive rainfall in parts of the state. He further added that “As far as declaring results on Saturday, July 31, is concerned, I can just say that all our divisional boards are working hard and work on the result is going on.”
Meanwhile, in a notification issued on Thursday, MSBSHSE Secretary Ashok Bhosale has informed that a link has been made available on the board website – mh-ssc.ac.in, for HSC students to search their seat number.
Latest – Maharashtra Board has released the class 12 result 2021 criteria. On similar grounds with CBSE, MSBSHSE will also prepare the results based on three-year performance. The best three marks as obtained by the students in class 10, 11 and class 12 internal assessment is taken into consideration.
Friday, 16 July 2021
NEW ANOUNCEMENT, SSC RESULT CHECK AT JULY 16th AFTER 13:00 HOURS/ SIDE WILL BE RESTART AT 13.00 HOURS
MAHARASTRA STATE BOARD EDUCATION 2021
SSC 10TH RESULT HAS BEEN REALEASE
AFTER 13:00 HOURS
LINK OF SIDE
SSC RESULT HAS BEEN REUPLOADE AT 13:00 HOURS BEACAUSE OF SIDE HAS BEEN CRASH AT 1:39 AND STATE BOARD HAS CAN'T UPDATE RESULT
The Staff Selection Commission will publish the SSC results 2021 on its official website for all SSC exams such as GD, CPO, CGL, CHSL, JE, MTS, Stenographer and other exams conducted by the commission.
Candidates willing to know about different SSC exams can check the link provided. In this article, candidates can find the SSC Result 2020 related information for the following:
The Maharashtra State Board of Secondary & Higher Secondary Education, Pune 411004 is an Autonomous Body established under the provisions of the Maharashtra Act No. 41 of 1965. The Maharashtra State Board of Secondary & Higher Secondary Education, conducts the HSC and SSC Examinations in the state of Maharashtra through its nine Divisional Boards located at Pune, Mumbai, Aurangabad, Nasik, Kolhapur, Amravati, Latur, Nagpur and Ratnagiri. The Board conducts examination twice a year and the number of students appearing for the main examination is around 14 Lacs for HSC and 17 Lac’s SSC, for the supplementary examination around 6 Lacs students are expected HSC and SSC together. There are about 21000 schools (SSC) and 7000 (HSC) Higher Sec. Schools / Jr. colleges in the entire state.
Thursday, 15 July 2021
SSC 10 CLASS RESULT LINK /MSBSHSE Class 10 Results TODAY 1 PM
2021/ SSC 10 RESULT HAS BEEN RELEASE .MSBSHSE Class 10 Results TODAY 1 PM, Know Official Websites and How to Check Marks
Link
Maharashtra SSC Results 2021: The Maharashtra State Board of Secondary and Higher Secondary Education (MSBSHSE) will declare the result of class 10 or SSC exam at 1 pm on July 16, state's Education Minister Varsha Gaikwad said today. Due to coronavirus pandemic, Secondary School Certificate or SSC examination was not held this year in Maharashtra. Therefore, the Maharashtra board SSC result 2021 will be based on internal assessment.
"Maharashtra State Board of Secondary and Higher Secondary Education will release the class 10 results at 1 pm tomorrow. Exams of class 10 and class 12 were cancelled due to COVID-19. Results will be declared based on assessment," Varsha Gaikwad said. There are two official websites on which the Maharashtra SSC result 2021 can be checked online. Maharashtra SSC Class 10 Results 2021: Teachers, Non-Teaching Staff Involved in Evaluation Process Allowed to Travel by Local Trains.
Maharashtra SSC Result 2021: How to Check Marks
Visit the official website: www.mahresult.nic.in
Once on the homepage, click on "SSC Results 2021"
Enter your exam seat number and other details such as mother's name.
Click on "Submit" and your SSC Result 2021 will be displayed.
Take a printout and also download a copy for future reference.
Maharashtra Board Class 10 Results 2021: List of Websites to Check
The result of Maharashtra board SSC exam or class 10 can be checked online at maharesult.nic.in. The official website of the board - mahahsscboard.in - will also display direct link for the Maharashtra SSC result 2021.
16/07/2021 aniket s. mankar
Tuesday, 15 June 2021
Online Paise Kaise Kamaye 10 Sabse Aasan Tarike
Ghar Bethe Bethe Online Paise Kaise Kamaye?
Last Updated on JUN 16, 2021 by ANIKET S. MANKAR
Online Paise Kaise Kamaye? Ajkal har koi jan na chahta hai ki bethe bethe online paise kaise kamate hai jaldi. To aj Ankit bhai aap logo ko kuch aise tarike batane wala hai jisse aap bhi mere jaise paise kama sakte hai.
Online Paise Kaise Kamaye 10 Sabse Aasan tarike
- Youtube me videos dalkar
- Social media ka use karke bhi aap paise kama sakte hai
- Tiktok me videos banake
- Flipkart ya amazon me seller bankar
- Online reviews dekar
- Blogging start karke
- Website development ka kaam chalu karke
- Online samaan bechkar
- Affiliate marketing karke
1. Apni skills ya kala ko online bechkar (10000 se 15000/- Per Month)
Har kisi ke andar koi kala hoti hai lekin ise pehchante bhot kam log hai. Jo pechan jata hai apne andar ki kala ko use Winner kehte hai or jo nai pehchanta wo looser hota hai.
Kya aapko pata hai ki apke andar bhi kuch kala hai tabhi aap search karke is article tak phuch paye hai. chaliye to jante h ki aapke andar kya karne ki chhamta hai.
- Kuch aise website jaha har kuch bikta hai. Agar aapko gaana gana pasand hai to aap kisi ke liye gaana ga sakte hai and wo aapki awaz ko record karke rakh lega and iske badle me aapko 350/- dega.
- Agar aapko sketching pasand hai to aap kisi ki sketch banakar use de sakte hai and iske badle aapko wo paise dega.
- Agar aapko logo design karte banta hai tab to bhot hi achi baat hai. Aap kisi company ke liye logo design kar sakte hai or iske badle me aapko 1000/- tak milte hai.
- Agar aapko guitar, piano ya koi bhi instrument bajate banta hai to iske liye bhi aapko paise milte hai.
Ab baat ati hai ki ye sab aap kaha apply kar sakte hai? me aapko kuch aisi website ke naam bata raha hu jaha aap apna account banakar ye kaam start kar sakte hai.
- Fiverr.com
- PeoplePerHour.com
- Guru.com
- Freelancer.com
- Elance.com
Ye bhi padhe:
- Fiverr.com me account kaise banate hai?
- PeoplePerHour.com me account kaise banate hai?
- Guru.com me account kaise banate hai?
- Freelancer.com me account kaise banate hai?
- Elance.com me account kaise banate hai?
2. Youtube channel me videos dalkar (20000 se 25000/- Per Month)
Youtube me laakho video pade hote hai esa kyo ? Kya jo bhi log videos daalte hai unke paas free fokat time h kya ? Ji nai balki iske badle unko paise milte hai or ye paise deta hai google.
Note : Yaad rahe ki youtube ki kuch sharte hoti hai jo ki poori karna aniwarya hai.
Aap bhi youtube me videos banakar daal sakte hai or online paise kama sakte hai. Ab question ye ata hai ki Youtube se aap kitne paise kama sakte hai har month?
Ye depend karta hai ki app kitne videos dalte h daily. Mere Kuch dosto ke channels ke naam yha par likh raha hu jinki income 60000 se 2,90,000/- per month ki hai.
Channel 1 : Aapki Rasoi ( 1 Lakh Per month)
Channel 2 : Raksha ki Rasoi (60000/- Per month)
Channel 3 : Gyan Therapy (2 Lakh Per month)
Channel 4 : Artem Plays Toys (7 Lakh Per month)
Youtube me account and channel kaise banate hai?
3. Social media se online paise kaise kamaye?
Social media matlab Facebook, WhatsApp, Google+, Instagram and or bhi 20 social media hai jaha par log ek dusre se judte hai.
Or ha 90% logo ko to yeh bhi ni pata ki Faceboo, Instagram, whatsApp chalate chalate paise bhi kamaye ja sakte hai. Yeh janne ke liye niche diye gaye articles me click kare.
- Facebook se paise kaise kamaye?
- WhatsApp se paise kaise kamaye?
- Instagram se paise kaise kamaye?
- Twitter se paise kaise kamaye?
4. Tiktok me videos banakar paise kaise kamaye
Tiktok ek funny application hai jo ki ab tak $90 Billion dollor ki company ban chuki hai matlab Rs. 68,06,92,50,00,00/- ki company.
Tiktok me aap bhi videos banakar paise kama sakte hai badi asaani se. Bas ise viral karna padta hai to jo bhi video aap banaye wo badi hosiyari n creativity ke sath banaye. Is baare me puri tarah se jan ne ke liye niche diye gaye article ko padhe.
- Tiktok se paise kaise kamaye?
5. Flipkart ya amazon me seller ya affiliated bankar kamaye
Kya aapko pata hai ki flipkart and amazon se do tariko se paise kamaye ja sakte hai 1st Affiliate bankar 2nd Seller bankar.
Me khud ek seller hu and flipkart se Rs. 90000/- per month and amaozon se Rs. 1.8 Lakh per month kamata hu. Viswas nahi ho raha h na aapko? to aap niche di gayi link me click karke padhiye ki kaise kamate hai.
- Flipkart Se Paise Kaise Kamaye?
- Amazon Se Paise Kaise Kamaye?
6. Online reviews dekar paise kamaye
Bahot saare product jo new launch hote hai unme review dene ki job asani se mil jati hai.
Ye sajobs paane ke liye online apply karna padta hai. Kuch links share kar raha hu jisme aap jakar inko apply kar sakte hai.
- https://www.freelancer.in/jobs/reviews/
- https://www.appreviewspro.com/
- https://jooble.org/jobs-online-product-review
7. Blogging start karke online paise kaise kamaye
Dosto aap logo me se 73% logo ko ye bhi ni pata hota ki blogging hoti kya hai. Agar aap blogger hai to aap blog likhkar laakho rupees mahina kama sakte hai.
blooging ka matlab hota hai articles likhna and internet me daal dena and jab log is article ko google me dekhte hai to wo click karke apke blog me a jate hai and waha par aspas jo bhi Ads hote h unme click karte hi blogger (jiska blog hai) usko google paise deti hai. Poori jankari ke liye niche di hui link par click kare.
- Blogging Kya hai and isse paise kaise kamaye?
8. Website Design development se paise kaise kamaye
100 me se 60% engineers aise hai jinki job nahi lagi hai or wo ghar me bethe hai ek excuse lekar ki agar mujhe ye mila hota to me wo kar diya hota. Bhai agar aap bhi inme se ek ho to kasam se sabse bade looser ho. Bura mat man na bro but yahi sach hai.
Mene bhi engineering ki hai and me blogger hu, youtuber hu, website development janta hu, managment janta hu or bhi bhot kuch. Ye sab batakar me apni taarif ni kar raha hu balki ye kehna chahta hu ki:
“Kisi bhi kaam ko karne ka 1 karan hota hai or na karne ke 100” – Ankit
Agar aap bhi thoda bhot website development jante hai CMS ka use karke to bhot hi acha hai. Bas aapko wordpress me website banate ban na chahiye and aap freelancer.com me easily website development ke project le sakte hai or pura karne par aapko 9000/- se lekar 75000/- tak paise mil sakte hai. Yad rahe ki ye ek project ke paise hai.
Agar aap 1 month me 5 project bhi complete karte hai to sochiye kitna paisa kama sakte hai. Project paane ke liye niche freelancer ki link de raha hu bhai log:
- https://www.freelancer.in/jobs/?keyword=wordpress
9. Online samaan bechkar paise kamaye
Dosto jaise ki mene 5th point me bataya hai ki facebook amazon me seller bankar aap online paise kama sakte hai. Ye bhi usi tarah hai bas ha online paise kamane ke rtarike bhot hote hai.
Jese ki aap apni online shop bana sakte hai or wo bhi free me? Online shop banane ke liye niche di gayi links me click kare.
Agar aapke paas koi products hai bechne ke liye:
Agar aapke paas koi products nahi hai balki dusro ke products online bechkar paise kamana chahte hai:
- https://meesho.com/
Janiye: Meesho App Se Paise Kaise Kamaye
10. Affiliate marketing karke online paise kaise kamaye
Iska matlab suddh hindi me hota hai ki Kisi ke products ko apne friends tak pahuchana and commission kamana.
ajakal 100 me se 80% products affiliate marketing ke through bikte hai to aap ban sakte hai affiliater in products ke and online paise kama sakte hai.
Sabse jayada affiliator Flipkart and amazon ke bante hai. Bhaiyo lekin aap kuch or bhi products ke affiliator ban sakte hai. Kuch links share kar raha hu inhe jarur padhiye.
Websitehoting Affiliate se bhot jyada paise kamaye ja sakte hai lekin iske liye aapko website hosting ke baare me basic jankari hona chahiye.
Niche link de raha hu jisme saari hosting ke affiliate account banane ki link di gayi hai and commision bhi diya gya hai ek sale hone par or ye commision minimum 6000/- se lekar 42000/- tak bhi ho sakta hai.
Link: https://www.websitehostingrating.com/best-web-hosting-affiliate-programs/
Summary:
To fir final shabdo me agar mujhe inme se kisi ek tarike ko select karne ko bola jaye to me select karuga 2nd 4th and 6th kyonki ye sabse aasan hai. Baaki har kisi ki choice alag alag hoti hai.
To dosto comment me yeh jarura batiyega ki apka question Online Paise Kaise Kamaye? ka answer mil gaya h ki nai. Bhot mehnat se article likha hai aap sabhi ke liye agar isme koi kami ho to mujhe comment section me jarur bataiyega me. Dhanyabad.
FACTS OF THE OUR EARTH . THE UNSOLVED FACTS OF EARTH
FACTS OF THE OUR EARTH .
THE UNSOLVED FACTS OF EARTH
Earth as you know is our very own planet, and is the only known planet currently that supports life. Earth is a planet in the solar system and is the 3rd closest planet to the sun. The distance from the sun to Earth is over 90 million miles. Earth is the 5th largest planet in the solar system, which makes Earth the 4th smallest planet in the solar system. Earth is one of the four planets in the solar system that is a rocky planet. These rocky planets are called ‘Terrestrial Planets’
We know that the Earth was formed about 4.5 billion years ago, and has existed ever since. Earth’s orbit around the sun is the 3rd fastest orbit of all the solar system planets.
Earth is the third planet from the sun, and the only place we know of so far that’s inhabited by living things. It is the only world in our solar system with liquid water on the surface. Slightly larger than nearby Venus, Earth is the biggest of the four planets closest to the sun, all of which are made of rock and metal.
Earth
- # 1.Earth tilts on an axis of 23.5 degrees.
- # 2. Earth has a powerful magnetic field that protects the planet from harmful elements from space.
- # 3. Earth has 1 moon.
- # 4. Earth doesn’t have any rings.
- # 5. The Earth is the densest planet in the solar system.
MSBTE POLYTECHNIC 4th Sem Environmental Engineering Multiple choice Questions and Answers
Best Environmental Engineering Multiple choice Questions and Answers
1. Assertion A : The consumption of water increases with increase in the distribution pressure.
Reason R : Higher distribution pressure causes more loss and waste of water.
Select your answer according to the coding system given below
a) Both A and R are true and R is the correct explanation of A.
b) Both A and R are true but R is not the correct explanation of A.
c) A is true but R is false.
d) A is false but R is true.
Ans: a
FFFF
2. The per capita consumption of a locality is affected by
i) climatic conditions
ii) quality of water
iii) distribution pressure
The correct answer is
a) only (i)
b) both (i) and (ii)
c) both (i) and (iii)
d) all (i), (ii) and (iii)
Ans: d
3. Which of the following causes a decrease in per capita consumption ?
a) use of metering system
b) good quality of water
c) better standard of living of the people
d) hotter climate
Ans:a
4. The hourly variation factor is usually taken as
a) 1.5
b) 1.8
c) 2.0
d) 2.7
Ans:a
5. If the average daily consumption of a city is 100,000 m3, the maximum daily consumption on peak hourly demand will be
a) 100000m3
b) 150000m3
c) 180000m3
d) 270000 m3
Ans:d
6. The distribution mains are designed for
a) maximum daily demand
b) maximum hourly demand
c) average daily demand
d) maximum hourly demand on maximum day
Ans:d
7. As compared to geometrical increase method of forecasting population, arithmetical increase method gives
a) lesser value
b) higher value
c) same value
d) accurate value
Ans:a
8. The population of a town in three consecutive years are 5000, 7000 and 8400 respectively. The population of the town in the fourth consecutive year according to geometrical increase method is
a) 9500
b) 9800
c) 10100
d) 10920
Ans:d
9. The suitable method of forecasting population for a young and rapidly increasing city is
a) arithmetical increase method
b) geometrical increase method
c) incremental increase method
d) graphical method
Ans:b
10. The depression of water table in a well due to pumping will be maximum
a) at a distance R from the well
b) close to the well
c) at a distance R/2 from the well
d) none of the above
where R is the radius of influence
Ans:b
11. The devices which are installed for drawing water from the sources are called
a) aquifers
b) aquiclude
c) filters
d) intakes
Ans:d
12. Select the correct relationship between porosity (N), specific yield (y) and specific retention (R)
a) N = y + R
b) y = N + R
c) R = N + y
d) R > (N + y)
Ans:a
13. The type of valve, which is provided on the suction pipe in a tube-well, is
a) air relief valve
b) reflux valve
c) pressure relief valve
d) sluice valve
Ans:b
14. The maximum discharge of a tube-well is about
a) 5 litres/sec
b) 50 litres/sec
c) 500 litres/sec
d) 1000 litres/see
Ans:b
15. As compared to shallow-wells, deep wells have
a) more depth
b) less depth
c) more discharge
d) less discharge
Ans:c
16. Ground water is usually free from
a) suspended impurities
b) dissolved impurities
c) both suspended and dissolved impuri¬ties
d) none of the above
Ans:a
17. The polluted water is one which
a) contains pathogenic bacteria
b) consists of undesirable substances rendering it unfit for drinking and domestic use
c) is safe and suitable for drinking and domestic use
d) is contaminated
Ans:b
18. Which of the following is not a water borne disease ?
a) dysentery
b) cholera
c) typhoid
d) maleria
Ans:d
19. The most common cause of acidity in water is
a) carbon dioxide
b) oxygen
c) hydrogen
d) nitrogen
Ans:a
20. The phenolic compounds in public water supply should not be more than
a) 0.1 ppm
b) 0.01 ppm
c) 0.001 ppm
d) 0.0001 ppm
Ans:c
21. The maximum permissible limit for flouride in drinking water is
a) 0.1 mg/litre
b) 1.5 mg/litre
c) 5 mg/litre
d) 10 mg/litre
Ans:b
22. Standard EDTA (ethylene diamine tetra acetic acid) solution is used to determine the
a) hardness in water
b) turbidity in water
c) dissolved oxygen in water
d) residual chlorine in water
Ans:a
23. If the coliform bacteria is present in a sample of water, then the coliform test to be conducted is
i) presumptive coliform test
ii) confirmed coliform test
iii) completed coliform test The correct answer is
a) only (i)
b) both (i) and (ii)
c) both (i) and (iii)
d) all (i), (ii) and (iii)
Ans:d
24. Alkalinity in water is expressed as milli-grams per litre in terms of equivalent
a) calcium carbonate
b) magnesium carbonate
c) sodium carbonate
d) calcium hydroxide
Ans:a
26. Which of the following values of pH represents a stronger acid?
a) 2
b) 5
c) 7
d) 10
Ans:a
27. Turbidity is measured on
a) standard silica scale
b) standard cobalt scale
c) standard platinum scale
d) platinum cobalt scale
Ans:a
28. On standard silica scale, the turbidity in drinking water should be limited to
a) 10 ppm
b) 20 ppm
c) 30 ppm
d) 50 ppm
Ans:a
29. Residual chlorine in water is determined by
a) starch iodide method
b) orthotolidine method
c) both (a) and (b)
d) none of the above
Ans:c
30. Orthotolidine test is used for determination of
a) dissolved oxygen
b) residual chlorine
c) biochemical oxygen demand
d) dose of coagulant
Ans:b
31. If the total hardness of water is greater than its total alkalinity, the carbonate hardness will be equal to
a) total alkalinity
b) total hardness
c) total hardness - total alkalinity
d) non carbonate hardness
Ans:a
32. The amount of residual chlorine left in public water supply for safety against pathogenic bacteria is about
a) 0.01 to 0.05 ppm
b) 0.05 to 0.5 ppm
c) 0.5 to 1.0 ppm
d) 1.0 to 5.0 ppm
Ans:b
33. The dissolved oxygen level in natural unpolluted waters at normal temperature is found to be of the order of
a) 1 mg/litre
b) 10 mg/litre
c) 100 mg/litre
d) 1000 mg/litre
Ans:b
34. The velocity of flow of water in a sedimentation tank is about
a) 5 to 10 cm/sec.
b) 15 to 30 cm/sec.
c) 15 to 30 cm/minute
d) 15 to 30 cm/hour
Ans:c
35. The length of rectangular sedimentation tank should not be more than
a) B
b) 2B
c) 4B
d) 8B
where B is the width of the tank
Ans:c
36. The overflow rate for plain sedimentation tanks is about
a) 500 to 750 litres/hour/ m2
b) 1000 to 1250 litres/hour/ m2
c) 1250 to 1500 litres/hour/m2
d) 1500 to 2000 litres/hour/m2
Ans:a
37. Percentage of bacterial load that can be removed from water by the process of plain sedimentation is about
a) 10 to 25
b) 50
c) 75
d) 100
Ans:c
38. The settling velocity of a particle in a sedimentation tank depends on
a) depth of tank
b) surface area of tank
c) both depth and surface area of tank
d) none of the above
Ans:b
39. The settling velocity of a particle in a sedimentation tank increases if
a) particle size is decreased
b) the surface area of tank is increased
c) the depth of tank is decreased
d) none of the above
Ans:d
40. For a given discharge, the efficiency of sedimentation tank can be increased by
a) increasing the depth of tank
b) decreasing the depth of tank
c) increasing the surface area of tank
d) decreasing the surface area of tank
Ans:c
41. The detention period and overflow rate respectively for plain sedimentation as compared to sedimentation with coagulation are generally
a) less and more
b) less and less
c) more and less
d) more and more
Ans:c
42. The amount of coagulant needed for coagulation of water increases with
i) increase in turbidity of water
ii) decrease in turbidity of water
iii) increase in temperature of water
iv) decrease in temperature of water
The correct answer is
a) (i) and (ii)
b) (i)and(iv)
c) (ii) and (iii)
d) (ii) and (iv)
Ans:b
43. Alum as a coagulant is found to be most effective when pH range of water is
a) 2 to 4
b) 4 to 6
c) 6 to 8
d) 8 to 10
Ans:c
44. The detention period in coagulation tanks is usually kept as
a) 1 to 2 minutes
b) 30 to 45 minutes
c) 2 to 6 hours
d) 2 to 6 days
Ans:c
45. The alum, when added as a coagulant in water
a) does not require alkalinity in water for flocculation
b) does not affect pH value of water
c) increases pH value of water
d) decreases pH value of water
Ans:d
46. The chemical most commonly used to increase speed of sedimentation of sewage is
a) sulphuric acid
b) copper sulphate
c) lime
d) sodium permanganate
Ans:c
47. In water treatment, rapid gravity filters are adopted to remove
a) dissolved organic substances
b) dissolved solids and dissolved gases
c) floating solids and dissolved inorganic solids
d) bacteria and colloidal solids
Ans:d
48. The rate of filtration in slow sand filters in million litres per day per hectare is about
a) 50 to 60
b) 100 to 150
c) 500 to 600
d) 1400 to 1500
Ans:a
49. The effective size of sand particles used in slow sand filters is
a) 0.25 to 0.35 mm
b) 0.35 to 0.60 mm
c) 0.60 to 1.00 mm
d) 1.00 to 1.80 mm
Ans:a
50. As compared to rapid sand filters, slow sand filters give
i) slower filtration rate
ii) higher filtration rate
iii) lesser efficiency in removal of bacteria
iv) higher efficiency in removal of bacteria The correct answer is
a) (i) and (ii)
b) (ii) and (iii)
c) (i) and (iv)
d) (ii) and (iv)
Ans:c
51. Assertion A: Slow sand filters are more efficient in removal of bacteria than rapid sand filters.
Reason R : The sand used in slow sand filters is finer than that in rapid sand filters.
Select your answer based on the coding system given below:
a) Both A and R are true and R is the correct explanation of A.
b) Both A and R are true but R is not the correct explanation of A.
c) A is true but R is false.
d) A is false but R is true.
Ans:a
52. Air binding phenomena in rapid sand filters occur due to
a) excessive negative head
b) mud ball formation
c) higher turbidity in the effluent
d) low temperature
Ans:a
53. The percentage of filtered water, which is used for backwashing in rapid sand filters, is about
a) 0.2 to 0.4
b) 0.4 to 1.0
c) 2 to 4
d) 5 to 7
Ans:c
54. Period of cleaning of slow sand filters is about
a) 24 - 48 hours
b) 10-12 days
c) 2-3 months
d) 1-2 year
Ans:c
55. The rate of Alteration of pressure filters is
a) less than that of slow sand filters
b) in between the filtration rate of slow sand filters and rapid sand filters
c) greater than that of rapid sand filters
d) equal to that of slow sand filters
Ans:c
56. Double filtration is used
a) to increase the filtration slow sand filters capacity of
b) to increase the filtration rapid sand filters capacity of
c) for isolated buildings like pools, hotels etc swimming
d) all of the above
Ans:a
57. Cleaning is done by
i) scraping and removal in filters slow sand
ii) back washing in slow sand filters
iii) scraping and removal in filters rapid sand
iv) back washing in rapid sand filters
The correct answer is
a) (i) and (ii)
b) (ii) and (iii)
c) (i) and (iv)
d) (ii) and (iv)
Ans:c
58. Disinfection of water results in
a) removal of turbidity
b) removal of hardness
c) killing of disease bacteria
d) complete sterilisation
Ans:c
59. The disinfection efficiency of chlorine increases by
i) decreasing the time of contact
ii) decreasing the temperature of water
iii) increasing the temperature of water The correct answer is
a) only (i)
b) both (i) and (ii)
c) both (i) and (iii)
d) only (iii)
Ans:d
60. Chlorine demand of water is equal to
a) applied chlorine
b) residual chlorine
c) sum of applied and residual chlorine
d) difference of applied and residual chlorine
Ans:d
61. The process in which the chlorination is done beyond the break point is known as
a) prechlorination
b) post chlorination
c) super chlorination
d) break point chlorination
Ans:c
Dear Readers, Welcome to Environmental Engineering Objective Questions have been designed specially to get you acquainted with the nature of questions you may encounter during your Job interview for the subject of Environmental Engineering MCQs. These objective type Environmental Engineering questions are very important for campus placement test and job interviews. As per my experience good interviewers hardly plan to ask any particular question during your Job interview and these model questions are asked in the online technical test and interview of many IT & Non IT Industries.
Subscribe to:
Posts (Atom)
power genration by using speed breaker /final year project/ mechanical engineering capstone project
mechanical engineering capstone project final year project project title power genration by using speed breaker 👇👇👇👇👇👇👇👇👇👇 CLICK...
-
Ghar Bethe Bethe Online Paise Kaise Kamaye? JUN16, 2021 by ANIKET S. MANKAR Last Updated on JUN 16, 2021 by ANIKET S. MANKAR Online Pai... -
mechanical engineering capstone project final year project project title power genration by using speed breaker 👇👇👇👇👇👇👇👇👇👇 CLICK...
-
Best Environmental Engineering Multiple choice Questions and Answers 1. Assertion A : The consumption of water increases with increase in ...
