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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The Bhils and the Kols live (a) along the Vindhya ranges (b) in the Nilgiris (c) in the North-East frontiers of India (d) All over India |
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Answer» (a) along the Vindhya ranges |
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| 2. |
If the cost price of 18 TV is equal to the selling price of 16 TV, what is the gain or loss percentage?1. 25% gain2. 25% loss3. 12.5% loss4. 12.5% gain |
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Answer» Correct Answer - Option 4 : 12.5% gain Given: The cost price of 18 TV = The selling price of 16 TV Formula Used: Profit percentage = {(SP – CP)/CP} × 100 Calculation: Let CP of 1 TV be Rs. x CP of 16 TV = Rs. 16x CP of 18 TV = Rs. 18x SP of 16 TV = Rs. 18x Percentage profit = (18x – 16x)/16x × 100 = 12.5% ∴ Profit% is 12.5% |
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| 3. |
Value of equilibrium constant `(K_P)` for a reaction A(g) 2B(g) is 0.0005 atm. What does it indicate ? (I) Products are more stable than reactants. (II) Reactants are very less dissociated. (III) Reactants are more stable than products. (IV) Value of `K_C` will be less than `K_P` at 300 K.A. II and IIIB. III and IVC. II, III and IVD. I, II, III and IV |
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Answer» Correct Answer - C Very small value of `K_P` indicates that reactants are more stable and very less dissociation. Unit of `K_P` = atm indicates that `Deltan_g` = 1 and `K_P` is greater than `K_C` |
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| 4. |
Which of the following alkene is most reactive for hydration :-A. EtheneB. But-1-eneC. 2-MethylpropeneD. Propene |
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Answer» Correct Answer - C Rate of EAR `prop (+I , +m, +HC)/(-I , -m)` or `prop` Stabilty of Alkene |
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| 5. |
Cost price of 10 blankets is equal to the selling price of 16 blankets. Then what is the loss percentage?1. 30%2. 37.5%3. 42.5%4. 45% |
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Answer» Correct Answer - Option 2 : 37.5% Given: The cost price of 10 blankets = The selling price of 16 blankets Formula Used: Loss percentage = {(CP – SP)/CP} × 100 Calculation: If the CP of G blanket be equal to SP of H blanket, then Loss percent = (H – G)/H × 100 = (16 – 10)/16 × 100 = 6/16 × 100 = 37.5% ∴ Loss % is 37.5% |
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| 6. |
If the selling price of 4 dresses is equal to the cost price of 5 dresses, Then what is the profit percentage?1. 20%2. 22.5%3. 25%4. 30% |
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Answer» Correct Answer - Option 3 : 25% Given: Cost price of 5 dresses = Selling price of 4 dresses Formula Used: Profit percentage = {(SP – CP)/CP} × 100 Calculation: CP of each dress be Rs. 1 then, CP of 4 dresses =Rs. 4 CP of 5 dresses = Rs. 5 SP of 4 dresses = Rs. 5 Profit percentage = (5 – 4)/4 × 100 = 25% ∴ Profit% is 25% |
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| 7. |
The cost price of 25 beds is equal to the selling price of 20 beds. Then what is gain or loss percentage?1. 20% loss2. 25% gain3. 60% loss4. 75% gain |
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Answer» Correct Answer - Option 2 : 25% gain Given: The cost price of 25 beds = The selling price of 20 beds Formula Used: Profit percentage = {(SP – CP)/CP} × 100 Calculation: Let CP of 1 bed be Rs. x CP of 25 beds = Rs. 25x SP of 20 beds = Rs. 25x CP of 20 beds = Rs. 20x Percentage profit = (25x – 20x)/20x × 100 = 25% ∴ Profit% is 25% |
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| 8. |
Alcohols are isomeric withA. acidsB. ethersC. estersD. aldehydes. |
| Answer» Correct Answer - B | |
| 9. |
If 3l of 1 M `Ag_(2) SO_(4)` is mixed with 4 litre of 1M NaCl solution then what will be the sum of molarity of all the ions.A. 7MB. 1MC. 2.42 MD. 1.28 M |
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Answer» Correct Answer - 4 `{:(Ag_(2)SO_(4),+,2NaCl,to,2AgCL,+,Na_(2)SO_(4)),("3 mole",,"4 mole",,x,,"2 mole"),(Ag+SO_(4)^(2),,,,,,Na^(+)" " SO_(4)^(2)),("2 1",,,,,,"4 2"):}` [Conc.]=`9/2 =1.28` |
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| 10. |
The selling price of 10 mobiles is equal to the cost price of 13 mobiles. What is the profit percentage?1. 30%2. 10%3. 13%4. 3% |
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Answer» Correct Answer - Option 1 : 30% Given: Cost price of 13 mobiles = Selling price of 10 mobiles Formula Used: Profit percentage = {(SP – CP)/CP} × 100 Calculation: Let the CP of 1 mobile = Rs 1 CP of 13 mobiles = Rs 13 CP of 10 mobiles = Rs 10 SP of 10 mobile = Rs 13 Gain percent = (13 - 10)/10 × 100 = 30% ∴ Gain% is 30% |
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| 11. |
If the cost price of 10 buses is equal to the selling price of 8 buses, then what is the gain percentage?1. 10%2. 8%3. 50%4. 25% |
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Answer» Correct Answer - Option 4 : 25% Given: The cost price of 10 buses = The selling price of 8 buses Formula Used: Profit percentage = {(SP – CP)/CP} × 100 Calculation: Let CP of 1 bus be Rs. x CP of 10 buses = Rs. 10x SP of 8 buses = Rs. 10x CP of 8 buses = Rs. 8x Profit percent = (10x – 8x)/8x × 100 = 25% ∴ Profit% is 25% |
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| 12. |
The major product formed in the following reaction is : `CH_3-overset(CH_(3))overset(|)underset(H)underset(|)C-CH_2Broverset(CH_3O^(-))underset(CH_3OH)to`A. `CH_3-overset(CH_(3))overset(|)underset(H)underset(|)C-CH_2OCH_3`B. `CH_3-underset(OCH_(3))underset(|)CH-CH_2CH_3`C. `CH_3-overset(CH_(3))overset(|)CH=CH_2`D. `CH_3-underset(OCH_(3))underset(|)overset(CH_(3))overset(|)C-CH_(3)` |
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Answer» Correct Answer - C The nucleophile `(CH_3-overset(-)O)` cannot attack carbon atom bearing Br radical beacause of a bulky isopropyl radical attacked to it. Therefore elimaination should be major reaction. |
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| 13. |
If the selling price of 10 jackets is equal to the cost price of 11 jackets, what is the gain percentage?1. 10%2. 11%3. 15%4. 25% |
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Answer» Correct Answer - Option 1 : 10% Given: The cost price of 11 jackets = The selling price of 10 jackets Formula Used: Profit percentage = {(S.P – C.P)/C.P} × 100 Calculation: Let the CP of each jacket be Rs. 1 CP of 10 jackets = Rs. 10 CP of 11 jackets = Rs. 11 SP of 10 jackets = Rs. 11 Profit percent = [(11 – 10)/10] × 100 = 10% ∴ Profit% is 10% |
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| 14. |
The compound which has linear anion in its solid state isA. I(CN)B. `N_(2)O_(3)`C. `N_(2)O_(5)`D. `BrF_(3)` |
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Answer» Correct Answer - 1 (i) Anion of I(CN) (ii) sp hybridisation and linear structure |
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| 15. |
Assuming methanol to undergo self dissociation to give `H^(+) & CH_(3)O^(-)` what will be its percentage dissociation if a 0.5 M solution has `[H^(+)]` equal to `2.5xx10^(-4) M`.A. 0.05B. 0.1C. 0.0005D. 0.0001 |
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Answer» Correct Answer - 1 `{:(CH_(3)OH,hArr ,CH_(3)O^(-),+,H^(+)),(0.5 M,,x,,x=2.5 xx10^(-4)):}` % dissociation `=(2.5xx10^(-4))/0.5 xx100 =0.05` |
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| 16. |
Find the word which is out of the logic list:A) stick B) cuddle C) attach D) adhere |
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Answer» Correct option is B) cuddle |
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| 17. |
The minimum mass of butane & oxygen which should be taken to obtain atleast 198 gm of each product `CO_(2)` & `H_(2)O`A. 396 gmB. 350 gmC. 299.25 gmD. 585.2 gm |
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Answer» Correct Answer - 4 `{:(C_(4) H_(10) +13/2 O_(2) to,4CO_(2)(g),,5H_(2)O(l)),(,176 hm ,,90),(=127.6+457.6,=582.2 gm ,,):}` |
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| 18. |
Read the extract from Kayal’s diary entry regarding her Nepal Trek, and fill in the blanks with the correct tense form of the verbs given in brackets.DAY 1: We (1) _______ (leave) Anna International Airport in Chennai two days ago catching a direct flight to Kathmandu in Nepal. We (2) _______ (spend) a day sightseeing. Kathmandu is full of people, rickshaws and the smell of sandalwood. I’ve never (3) _______ (be) on a trip like this before. So I’m really excited.DAY 2: It (1) _______ (rain) when we reached Pokhara, Nepal’s second largest city, and saw the snowy peaks of the Himalayas for the first time. We. (2) _______ (reach) Pokhara after a hair-raising six-hour bus journey along very narrow roads with a lot of hairpin bends. The bus (3) _______ (be) so full that one person had to share the driver’s seat.DAY 3: We (1) _______ (begin) our trek at last. We are at about 900 metres and the weather is warm and humid. For lunch we had chips and yak cheese sandwiches. I didn’t like them very much. I’m thrilled that we (2) _______ (pitch) tents for our camps in the dense forests.DAY 4: Yesterday a landslide (1) _______ (block) our path and we had to use ropes to get over it. This morning we walked along the river Kali Gandaki through dense forests of oak trees and we pitched our camp at Tukuche below the Annapurna mountain range. The main danger in addition to landslides, is ‘yak attack’. Yaks (3) _______ (be) not dangerous but you have to be careful if you meet a herd of them because they can push you off the sides of the mountain.DAY 5: We met a lot of children on our trek through the villages. They (1) _______ (play) in the pool of muddy rain water as we left the place. We have already climbed 2,400 metres. Up here, it never (2) _______ (rain) and there are no trees. It (3) _______ (be) windy and dusty and I am always thirsty.DAY 6: Yesterday we (1) _______ (go) up to the mountainside of the township of Mukthinath, at 3,600 metres. The thin air with less oxygen there (2) _______ (leave) us breathless. We (3) _______ (feel) that we couldn’t go any further. We (4) _______ (drink) a lot of extra fluids to prevent altitude sickness.DAY 7: We turned around today and started to descend to Jomosom. As we went down, the oxygen filled our blood again and we seemed to (1) _______ (fly) instead of walking.DAY 8: We went back to Pokhara in a small plane yesterday. It (1) _______ (excite) when we flew between the mountain peaks. We arrived in Kathmandu this afternoon and we(2) (spend) our last few hours in shopping. We leave for Chennai tomorrow. We’ve had a trip of a lifetime. |
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Answer» Day-1 1. left 2. spent 3. been Day-2 1. was raining 2. reached 3. was Day-3 1. began 2. pitched Day-4 1. blocked 2. are Day-5 1. were playing 2. rains 3. is Day-6 1. went 2. left 3. felt 4. drank Day-7 1. be flying Day-8 1. was exciting 2. spent |
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| 19. |
Assertion : Angle of repose is equal to angle of limiting friction.Reason : When the body is just at the point of motion, the force of friction in this stage is called as limiting friction.A. Both Assertion and Reason are correct, Reason is the coreect expianation of AssertionB. Bioth Assertion and Reason are Correct but Reason is not the correct expalnation of AssertionC. Assetion is correct and Reason is incorrectD. Assertion is incorrect and Reason is correct |
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Answer» Correct Answer - A |
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| 20. |
What will be the raito of volume of `._(13)Al^(27)` nucleus to that of `._(11)Na^(23)` ?A. 1.055B. 1.174C. Density of atoms should be known for calculations.D. 1 |
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Answer» Correct Answer - 2 Rate `=(27/23)^(3) =1.174` |
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| 21. |
You are a commentator for a 5000 metre running race. Use simple present and present continuous tenses and complete the commentary from the beginning to the end of the race. Read the completed passage aloud.The 5000 metre race is about to begin. Lined up at the starting point, from left to right, are John of Great Britain, Peter of Nigeria and Jeeva of India. The runners are warming up for the great event. Now they. (1) _______ (take) their positions on the track. They (2) _______ (be) all ready for the start. There (3) _______ (go) the starter’s gun! Yes, the race has begun. John (4) _______ . (lead) with Jeeva (5) _______ (close) behind him. |
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Answer» 1. are taking 2. are 3. goes 4. is leading 5. closing |
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| 22. |
Fill in the blanks with appropriate determiners. (Articles have been included)Once the emperor gave a bag of seeds to his council of ministers and said that he would give them six months time to grow the seeds. Whoever does a good job will be made the (1) _____ emperor of that empire. (2) _____ the ministers took their task seriously. After six months (3) _____ ministers had small plants in their pots. A (4) _____ had very large plants. (5) _____ had medium sized plants. The emperor entered the hall. He was (6) _____ amused to see (7) _____ plants. He called the (8) _____ minister and asked him what he did with the seed. (9) _____ minister explained the process he adopted to make (10) _____ plant grow. (11) _____ the emperor called the other ministers to explain what they did. Only (12) _____ minister had come with an empty pot.They laughed loudly at the foolishness of this minister. But the Emperor applauded him and made him the (13) _____ Emperor. Do you know why? He had given them boiled seeds which will not grow. Only (14) _____ minister was honest. |
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Answer» 1. next 2. All 3. many 4. few 5. Some 6. very much 7. the 8. first 9. The 10. the 11. Next 12. one 13. next 14. one |
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| 23. |
Fill in the blanks with appropriate determiners.1. They came early but there was (little/ a little) work to do. 2. Anand invited (few/a few) friends for the birthday party. 3. The teacher gave (all /every) student a separate topic for the assignment. 4. (Most of/Many) the water overflowed from the tank. 5. Each one of my (friend/fiiends) wished me on my birthday.6. Vijay had (no/ any) idea about the problem. 7. Adhi had taken (much /many) photos during the programme, 8. (Some/Few) girls who attended the class informed the others about the test. |
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Answer» 1. little 2. a few 3. every 4. Most of 5. friends 6. no 7. many 8. some |
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| 24. |
Use the verbs given in brackets in the following sentences in their correct forms.1. I (like) to spend time with my friend,whenever I (be) free.2. He (is) likely to miss the train. He (run) to the station.3. At the moment, they (wait) at the bus-stop. But I (not know) their plans for the journey.4. They firmly (believe) in the existence of God.5. We (hear) a lot of noise because the new buildings (transmit) sound waves.6. She always (make) excuses for coming late.7. The Prime Minister (leave) for America to meet the delegates tomorrow. |
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Answer» 1. I like to spend time with my friend, whenever I am free. 2. He is likely to miss the train. He is running to the station. 3. At the moment, they are waiting at the bus-stop. But I do not know their plans for the journey. 4. They firmly believe in the existence of God. 5. We hear a lot of noise because the new buildings are transmitting sound waves. 6. She always makes excuses for coming late. 7. The Prime Minister leaves for America to meet the delegates tomorrow. |
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| 25. |
TensesFill in the blanks with the correct form of the verbs in brackets and read the completed passage aloud.The people of India, as a whole, (1) _______ (be) warmhearted and hospitable. Any calamity in any part of the world immediately (2) _______ (arise) their charity and generosity and a. committee (3). _______ (be) promptly (4) _______ (set ) up to collect funds to help the distressed. The most endearing quality in them (5) _______ (be) the respect they show for the work done in any capacity. They (6) _______ (believe) in what we (7) _______ (call) the dignity of labour. |
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Answer» 1. are 2. arouses 3. is 4. set 5. is 6. believe 7. call |
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| 26. |
A `0.1` molal solution of `NaCI` found to be isotomic with `1%` urea solution , calculate `alpha` and `i` for `NaCI`A. `i = 1.66 alpha= 0.66`B. `i = 2.66 alpha= 0.66`C. `i = 1.66 alpha= 2.66`D. `i = 3.66 alpha= 2.66` |
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Answer» Correct Answer - a `i_(1)(CM)_(1) = i_(2) (CM)_(2)` `i_(1) (0.1) + (((W)/(V))% xx 10)/(M W) rArr i_(1) = (1 xx 10)/(60 xx 0.1)` `rArr i = (10)/(6) = 1.66 alpha = (i - 1)/(n - 1)` `alpha = (1.66 - 1)/(2-1)` |
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| 27. |
Read the following conversations and choose the language function of the underlined sentences:Head Master: After the bell, can you give the question paper to the students?Teacher: Ok sir.Head Master: And then tell the students that they should not write the questions in the answer booklet. Teacher: Ok sir, I will tell them.(A) Request(B) Instruction(C) Permission (D) Advice. |
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Answer» (B) Instruction |
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| 28. |
Fill in the blanks with the appropriate words: 1. We are not ........... to read .......... in the library. (aloud, allowed) 2. The police ............ the driver as he could not ........... his car documents. (find, fined)3. Did you ......... the little bird that sang ....... ? (hear, here)4. Do ........ tie the ropes with a ........ (not, knot)5. The police ..... the thief hiding behind a ....... (cot, caught)6. Don’t fight over this broken ......... of furniture but live together in .......... (peace, piece)7. Every day we play for an ........ in .......... garden. (hour, our)8. I ...... dinner at ........ o’clock. (ate, eight) 9. I will .......... on the ......... side of this notebook. (right, write) 10. He is still ...... after he fell sick last ...... (weak, week) |
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Answer» 1. allowed, aloud 2. fined, find 3. hear, here 4. not, knot 5. caught, cot 6. piece, peace 7. hour, our 8. ate, eight 9. write, right 10. weak, week |
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| 29. |
Which one of these words has only one syllable?Ago, school, survey, topper. |
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Answer» School has only one syllable. |
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| 30. |
Which one of these words has three syllables?Canteen, Vanish, People, Reflection. |
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Answer» Reflection has three syllables. |
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| 31. |
Which one of these words has two syllables?English, determine, adventure, probable. |
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Answer» English has two syllables. |
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| 32. |
Read the following conversations and choose the language function of the underlined sentences:Shashi: Rakesh, I have lost my mobile. Mind if I use yours? Rakesh: No. not at all. You can use it. Shashi: Thanks. (A) Obey (B) Permission (C) Request (D) Advice |
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Answer» (B) Permission |
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| 33. |
Read the following conversations and choose the language function of the underlined sentences:Dad: Have you done your homework, Keshav?Keshav: No dad.Dad: Do your homework first. You car. watch TV later.Keshav: Yes dad. (A) Request(B) Suggestion (C) Order(D) Permission |
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Answer» (B) Suggestion |
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| 34. |
Read the following conversations and choose the language function of the underlined sentences:Rekha: Takedown the address quickly.Anita: T haven’t brought my pen. If you (don’t mind, could I use your pen?(A) Questioning (B) Seeking help (C) Seeking information (D) Seeking permission |
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Answer» (D) Seeking permission |
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| 35. |
I’ll have to take the PUPILS into the hills. A) teachers B) schoolchildren C) kids D) students E) boys |
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Answer» Correct option is A) teachers |
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| 36. |
Why don’t they ANSWER my question? A) say B) ask C) reply D) reform E) report |
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Answer» Correct option is C) reply |
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| 37. |
Ask A) response B) reply C) question D) call |
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Answer» Correct option is C) question |
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| 38. |
Old A) elderly B) raw C) immature D) young |
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Answer» Correct option is A) elderly |
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| 39. |
End A) compare B) start C) finish D) move |
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Answer» Correct option is C) finish |
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| 40. |
Border A) density B) altitude C) edge D) surface |
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Answer» Correct option is C) edge |
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| 41. |
Active A) slow B) idle C) poor D) energetic |
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Answer» Correct option is D) energetic |
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| 42. |
Define the following terms: (a) Standard enthalpy of formation (b) Bond enthalpy ( c) Zeroth law of thermodynamics (d) Reversible and irrversible process |
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Answer» Standard enthalpy of formation: The enthalpy change accompanying the formation of one mole of a compound from its constituent elements in their respective standard states is called the standard enthalpy of formation of that compound. It is denoted by `Delta_(f)H^(Θ)`. The standard enthalpy change when one mole of water `(H_(2)O)` is formed by the combination of hydrogen and oxygen is called standard heat formation of water. `Delta_(f)H^(Θ)(298K)=-286 kJ mol^(-1)` b. Bond enthaply: The bond enthalpy is the amount of energy necessary to break bonds in mole of gaseous covalent substance to form products in the gaseous state. The bond enthalpy for `H_(2)` is `435.0 kJ mol^(-1)` c. Zwroth law of thermody namics: According to it two system separately in equilibrium with a third system are also in equilibrium with each other. Thus, if two system `A` and `B` are separately in equilibrium with a third system C, these are also in equilibrium with each other. d. Reversible process: A process is said to be reversible un case it is carried out infinitesimally slowly so that all changes occurring in the direct process can be exactly reversed and the system and surroundings remain in a state of equilibrium at any stage in the process. Irreversible process: A process in which the change is brought about rapidly and the system dies not have chance to achieve equilibrium. Actually, in an irreversible process, the force which drives the reactants towards the products (called driving force) is greater than the opposing force which is to carry the reverse process. |
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| 43. |
In what way internal energy is different from enthalpu? Explain both the trms with suitable examples. |
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Answer» Internal energy: Every substance prossesses a certain definite amount of energy known as internal energy `(E)`. The internal energy of a substance depends upon its nature and also the conditions of temperature and pressure. Thus, different substances possess varying amounts of internal energies depending upon the conditions. For example, the internal energy of `1` mole of water is different at temperatures of `280 K` and `290 K`. Enthalpy: The enthalpy of a system may be defined volume `(PV)` energy. `H=E+PV` |
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| 44. |
Find the maximum or minimum values of the function. `y=9-(x-3)^(2)` |
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Answer» `y=9-(x-3)^(2) = 6x-x^(2)` `(dy)/(dx)=6-2x` For minimum or maximum value of y, `(dy)/(dx)=0` `rArr "" 6-2x=0 "" rArr "" x=3` Here `(d^(2)y)/(dx^(2))=-2` is less than zero at x=3. `y_(max)=9-(3-3)^(2)=9` |
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| 45. |
There were ______ special economic zones in the state of Uttar Pradesh in 2018.1. 102. 123. 164. 19 |
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Answer» Correct Answer - Option 4 : 19 The correct answer is 19.
About Uttar Pradesh:
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| 46. |
An ideal Black-body at room temperature is thrown into a furnace. It is observed thatA. initially it is the darkest body and at later times the brightestB. it is the darkest body at all timesC. it cannot be distinguished at all timesD. initially it is the darkest body and at later times it cannot be distinguished |
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Answer» Correct Answer - D |
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| 47. |
An ideal black body at room temperature is thrown into a furnace. It is observed that (a) initially it is the darkest body and at later times the brightest (b) it is the darkest body at all times (c) it cannot be distinguished at all times (d) initially it is the darkest body and at later times it cannot be distinguished |
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Answer» Correct Answer is: (d) initially it is the darkest body and at later times it cannot be distinguished A closed furnace behaves as a black body. |
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| 48. |
Harsh purchased a home from Abhishek for Rs. 80 lakhs. Had Abhishek bought the home for Rs. 3 lakhs more, his profit% would have been 25%. At what price should Abhishek have sold the home to incur a profit of 36%?1. 80.98 lacs2. 82.96 lacs3. 84.56 lacs4. 85.52 lacs |
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Answer» Correct Answer - Option 2 : 82.96 lacs Given: Harsh purchased a home from Abhishek for Rs. 80 lakhs. Had Abhishek bought the home for Rs. 3 lakhs more, his profit % would have been 25%. Abhishek should have sold the home to incur a profit of 36%. Formula Used: Profit or Gain = Selling price – Cost Price Loss = Cost Price – Selling Price Profit percentage = (Profit/Cost Price) x 100 Loss percentage = (Loss/Cost price) x 100 Calculation: Selling price for Abhishek is Rs. 80 lacs and profit is 25% Cost price = Rs. (80 × 100/125)lacs = 64 lacs This is not the actual cost price; this is the increased cost price when he earns 25% profit Actual cost price = Rs. (64- 3) lacs = 61 lacs Required selling price = 61 × 1.36 = 82.96 lacs ∴ The selling price should be Rs. 82.96 lacs. |
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| 49. |
When was the treaty of Allahabad signed?1. 12 August 17642. 12 September 17643. 12 August 17654. 12 September 1763 |
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Answer» Correct Answer - Option 3 : 12 August 1765 The correct answer is 12 AUGUST 1765
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| 50. |
An ideal gas is taken through the cycle A → B → C → A, as shown in the figure. If the net heat supplied to the gas in the cycle is 5 J, the work done by the gas in the process C → A is (a) -5 J (b) -10 J (c) -15 J (d) -20 J |
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Answer» Correct Answer is: (a) -5 J From the first law of thermodynamics, Q = ΔU + W. For a cyclic process, ΔU = 0. Also, ϕ = 5 J W = WAB + WBC + WCA. WAB = pΔV = (10 N m-2) |(1 m3) = 10 J and WBC = 0. ∴ 5 J = 10 J + WCA or WCA + -5 J . |
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