100525 + Interview Questions in GENERAL QA IN GENERAL AWARENESS

1.

Write the main features of planetary winds and complete the table.Name of the windThe pressure belt from which the wind startsThe pressure belt to which the wind blowsThe directionNorthern Hemispheresouthern Hemisphere

Answer»

Name of the wind	The pressure belt from which the wind starts	The pressure belt to which the wind blows	The direction
Trade winds Westerlies polar winds	Subtropical high pressure belt Subtropical high pressure belt Polar high pressure belt	Equatorial low pressure belt Subpolar low pressure belt Sub polar low pressure belt	Northern Hemisphere	southern Hemisphere
			North east south west North east	south east North west south east

Discussion

2.	What could be the reason for the trade winds blowing from south east and north east directions?
Answer» Trade wind blows from sub-tropical high pressure belts to the equatorial low pressure belts. It is due to the Coriolis effect that the direction of trade winds is from north east in northern hemisphere and southeast in the southern hemisphere. Otherwise it will be from exact north and south.

Discussion

3.	A: What is wrong with Lisa? B: She ______ a fever. A) is B) has C) does D) got
Answer» Correct option is B) has

Discussion

4.	Many kinds of ________ animals are disappearing or have already disappeared from the earth. A) brave B) untamed C) unfriendly D) angry E) wild
Answer» Correct option is E) wild

Discussion

5.	I ______ a fever but I ______ have sore throat. A) have / don’t B) am / not C) have / don’t D) don’t / got
Answer» Correct option is A) have / don’t

Discussion

6.	Ria attended a seminar on the use of GMOs [Genetically Modified Organisms (plants, animals, or microorganisms)] in the food industry. While some speakers felt that GMOs are harmless and essentially provide the world with ample supply of food, others argued that GMOs are not safe because they pose serious health risks. She writes an essay on the pros and cons of GMOs . 1. Which of these can be taken as a title for her essay? a) GMOs: Boon or Bane b) GMOs are perfectly safe for us c) GMOs have serious side effects d) GMOs are a curse 2. Which of these should not be used by Ria in her essay? a) Her personal views on the benefits of GMOs. b) The benefits as well as the harmful effects of GMOs. c) The relevant information regarding the use of GMOs. d) Facts and data regarding the effectiveness of GMOs. 3. An ideal conclusion of her essay should be: a) Whatever might be harmful consequences of consuming GMO foods its uses outweigh the former. b) GMOs might be completely banned, in the near future. c) The negative consequences of consuming GMOs deem it unfit for consumption altogether. d) The health hazards posed by GMOs are far from real.
Answer» (1) (a) GMOs: Boon or Bane (2) (a) Her personal views on the benefits of GMOs (3) (a) Whatever might be harmful consequences of consuming GMO foods its uses outweigh the former.

6.

Ria attended a seminar on the use of GMOs [Genetically Modified Organisms (plants, animals, or microorganisms)] in the food industry. While some speakers felt that GMOs are harmless and essentially provide the world with ample supply of food, others argued that GMOs are not safe because they pose serious health risks. She writes an essay on the pros and cons of GMOs . 1. Which of these can be taken as a title for her essay? a) GMOs: Boon or Bane b) GMOs are perfectly safe for us c) GMOs have serious side effects d) GMOs are a curse 2. Which of these should not be used by Ria in her essay? a) Her personal views on the benefits of GMOs. b) The benefits as well as the harmful effects of GMOs. c) The relevant information regarding the use of GMOs. d) Facts and data regarding the effectiveness of GMOs. 3. An ideal conclusion of her essay should be: a) Whatever might be harmful consequences of consuming GMO foods its uses outweigh the former. b) GMOs might be completely banned, in the near future. c) The negative consequences of consuming GMOs deem it unfit for consumption altogether. d) The health hazards posed by GMOs are far from real.

Answer»

(1) (a) GMOs: Boon or Bane

(2) (a) Her personal views on the benefits of GMOs

(3) (a) Whatever might be harmful consequences of consuming GMO foods its uses outweigh the former.

Discussion

7.	Do as directed and choose the correct options to answer of the given questions. 1. His bodyguards are checking out the bathroom. (Begin The bathroom ________) a. The bathroom is being checked by the bodyguards. b. The bathroom has been checked by the bodyguards c. The bathroom was being checked by the bodyguards. d. The bathroom had been checked by the bodyguards. 3. Not many men would be cruel and unjust to a cripple. (Change from negative to affirmative) a) Very less men would be cruel and unjust to a cripple. b) Only a few men would be cruel and unjust to a cripple. c) No one would be cruel and unjust to a cripple. d) Very few men would be cruel and unjust to a cripple. 3. Besides having a salary, he also has a private income. (Use not only….but) a) He not only has a salary but also a private income. b) He had not only a salary but also a private income. c) He has not only a salary but also a private income. d) He has had not only a salary but also a private income. 4. “My hour is come,” thought he. “Let me meet death like a man.” (Change to Indirect speech) a) He thought his hour had come and decided to meet death like a man. b) He thought that his hour has come and decided to meet death like a man. c) He thought that his hour had come and decides to meet death like a man. d) He thought that his hour had come and decided to meet death like a man. 5. Do not insult the weak. (Rewrite the sentence in the passive form) a) Let the weak not be insulted. b) Let’s not insult the weak. c) Let not the weak be insulted. d) Let the weak not be insulted by us.
Answer» (1) (a) The bathroom is being checked by the bodyguards (2) (b) Only a few men would be cruel and unjust to a cripple. (3) (c) He has not only a salary but also a private income. (4) (d) He thought that his hour had come and decided to meet death like a man. (5) (c) Let not the weak be insulted.

7.

Do as directed and choose the correct options to answer of the given questions. 1. His bodyguards are checking out the bathroom. (Begin The bathroom ________) a. The bathroom is being checked by the bodyguards. b. The bathroom has been checked by the bodyguards c. The bathroom was being checked by the bodyguards. d. The bathroom had been checked by the bodyguards. 3. Not many men would be cruel and unjust to a cripple. (Change from negative to affirmative) a) Very less men would be cruel and unjust to a cripple. b) Only a few men would be cruel and unjust to a cripple. c) No one would be cruel and unjust to a cripple. d) Very few men would be cruel and unjust to a cripple. 3. Besides having a salary, he also has a private income. (Use not only….but) a) He not only has a salary but also a private income. b) He had not only a salary but also a private income. c) He has not only a salary but also a private income. d) He has had not only a salary but also a private income. 4. “My hour is come,” thought he. “Let me meet death like a man.” (Change to Indirect speech) a) He thought his hour had come and decided to meet death like a man. b) He thought that his hour has come and decided to meet death like a man. c) He thought that his hour had come and decides to meet death like a man. d) He thought that his hour had come and decided to meet death like a man. 5. Do not insult the weak. (Rewrite the sentence in the passive form) a) Let the weak not be insulted. b) Let’s not insult the weak. c) Let not the weak be insulted. d) Let the weak not be insulted by us.

Answer»

(1) (a) The bathroom is being checked by the bodyguards

(2) (b) Only a few men would be cruel and unjust to a cripple.

(3) (c) He has not only a salary but also a private income.

(4) (d) He thought that his hour had come and decided to meet death like a man.

(5) (c) Let not the weak be insulted.

Discussion

8.	Answer the questions with reference to the context of a reflective essay:You attended a panel discussion on ‘Secrets to success in life’ and made notes about the factors which lead to success, namely- getting the right qualification and contacts. Suppose you are writing an essay discussing the factors which lead to success in life.(i) In the essay, you will validate the point of ‘making the right contacts’ by: a. exhorting people to concentrate on start ‘making contacts’ from childhood. b. chastising people for neglecting public relations c. eulogising successful people with no ‘contacts’ d. asserting the validity of the point by giving good examples(ii) Which of these would not be suggested for the essay: a. Give a title that catches the attention of the reader b. Give a suitable subscription towards the end. c. Conclude with your strongest point. d. Introduce a new point at the beginning of each paragraph
Answer» (i) (d) asserting the validity of the point by giving good examples (ii) (b) Give a suitable subscription towards the end

8.

Answer the questions with reference to the context of a reflective essay:You attended a panel discussion on ‘Secrets to success in life’ and made notes about the factors which lead to success, namely- getting the right qualification and contacts. Suppose you are writing an essay discussing the factors which lead to success in life.(i) In the essay, you will validate the point of ‘making the right contacts’ by: a. exhorting people to concentrate on start ‘making contacts’ from childhood. b. chastising people for neglecting public relations c. eulogising successful people with no ‘contacts’ d. asserting the validity of the point by giving good examples(ii) Which of these would not be suggested for the essay: a. Give a title that catches the attention of the reader b. Give a suitable subscription towards the end. c. Conclude with your strongest point. d. Introduce a new point at the beginning of each paragraph

Answer»

(i) (d) asserting the validity of the point by giving good examples

(ii) (b) Give a suitable subscription towards the end

Discussion

9.

Prepare a chart describing the planetary winds, the areas where they blown and their features.

Answer»

Planetary winds	Areas where they blow	Features
Trade winds	Sub tropical high pressure belt to equatorial low pressure belt	The Zone where the trade winds from both the hemisphere converge is known as the inter Tropical convergence Zone. These winds blow from north east in Northern Hemisphere. south east in southern hemisphere.
Westerlies	Sub tropical high pressure belt to sub-polar low pressure belt	In both hemisphere these winds are mostly from the west. The Wester lise are stron-ger in the southern hemisphere due to the vest expanse of oceans in the southern hemisphere.
Polar easterlies	polar high pressure belt to sub polar low pressure belt	These winds blow from the east in both the hemisphere.

Discussion

10.	What they need is clean, well- ____, and reasonably-_____ houses. A) equipped / priced B) equipping / pricing. C) equipped / pricing D) equipping / priced
Answer» Correct option is A) equipped / priced

Discussion

11.	The dog had run away and the children ___ find it though they were looking for it the whole day. A) can B) can’t C) could D) may E) could not
Answer» Correct option is E) could not

Discussion

12.	As Mr. John hadn’t got the dictionary at hand, he ___ guess the meaning of the word. A) should B) can C) has to D) must E) had to
Answer» Correct option is E) had to

Discussion

13.	Sam never told his wife how much he ________ as a window cleaner. A) paid B) obtained C) deserved D) earned E) profited
Answer» Correct option is D) earned

Discussion

14.	A: _____ she _____ a new job? B: Yes, she does. A) Has / got B) Does / got C) Does / * D) Does / have
Answer» Correct option is D) Does / have

Discussion

15.	New houses are _____ than old ones. A) more modern and clean B) modern and cleaner C) more modern and cleaner D) moderner/cleaner
Answer» Correct option is C) more modern and cleaner

Discussion

16.	Sudhir started busines of garments. He was doing reasonably well in the domestic market therefore he wanted to expand in the global market. He had great suppliers to supply him required materials. But Sudhir wasn’t sure that he will be able to penetrate in global market due to shortage of funds and lack of technical knowledge about export procedures. Hence, he shelved his plans and paid more attention to domestic market. Name two barriers which restricted Sudhir in becoming global entrepreneur
Answer» 1) Lack of technical knowledge; 2) shortage of funds and resources; 3) Market entry regulations; 4) Fear of failure

16.

Sudhir started busines of garments. He was doing reasonably well in the domestic market therefore he wanted to expand in the global market. He had great suppliers to supply him required materials. But Sudhir wasn’t sure that he will be able to penetrate in global market due to shortage of funds and lack of technical knowledge about export procedures. Hence, he shelved his plans and paid more attention to domestic market. Name two barriers which restricted Sudhir in becoming global entrepreneur

Answer»

1) Lack of technical knowledge;

2) shortage of funds and resources;

3) Market entry regulations;

4) Fear of failure

Discussion

17.	Which of the following states of India enjoy special powers under Article 371A of the Constitution of India? A. Nagaland B. Rajasthan C. Himachal Pradesh D. Tamil Nadu
Answer» A. Nagaland Nagaland is the states of India enjoy special powers under article 371(A) of the Constitution of India.

17.

Which of the following states of India enjoy special powers under Article 371A of the Constitution of India? A. Nagaland B. Rajasthan C. Himachal Pradesh D. Tamil Nadu

Answer»

A. Nagaland

Nagaland is the states of India enjoy special powers under article 371(A) of the Constitution of India.

Discussion

18.	The guide would like the tourists to see the centre of the city. A) They wouldn’t either. B) Neither would they. C) So should they. D) A so they would. E) So would they.
Answer» Correct option is E) So would they.

Discussion

19.	The thief had to run out of the shop when the policeman began shooting. A) the customers had to B) so the customers did C) so had the customers D) so did the customers E) neither did the customers
Answer» Correct option is D) so did the customers

Discussion

20.	My mother ___ neither read nor write after the operation and now I ___ help her. A) have to / must B) could / have to C) couldn’t / had to D) were able / can E) might / need
Answer» Correct option is B) could / have to

Discussion

21.	I had to help my mother about the house. - ___ . A) Neither had I B) Either hadn’t we C) So had I D) So did I E) So do I
Answer» Correct option is D) So did I

Discussion

22.	_______ being the life blood of a business requires to be maintained in reasonably adequate quantity to run business successfully. A. Working capital B. Proper documents C. Assets D. Petty cash
Answer» A. Working capital

Discussion

23.	What does a personal trainer do? I meet each client to discuss what he or she is looking for. It could be __(1)__ from improving general fitness to losing - or, in a few cases, - __(2)__ weight. I then devise a training program for them which I think will __(3)__ them to achieve their __(4)__. If they’ve had anything __(5)__ with them, say a back __(6)__, I speak to their doctor who will __(7)__ me what not to do. If someone eats and drinks too much, it’s easy to suggest they __(8)__ , but if that doesn’t __(9)__, I look at their diet. I prefer to train on a one-to-one __(10)__, though I do sometimes work with __(11)__ if they are friends and want to train together. Who needs a personal trainer? I think most people do. A trainer will __(12)__ you to try __(13)__. You achieve 20 per cent more than you could training alone, no __(14)__ how dedicated you are. I’ve got a lot of Americans on my books, and I actually prefer them. __(15)__ most Brits, who still haven’t really got the idea, Americans know how to work out. 1. A) nothing B) everything C) anything D) something 2. A) adding B) gaining C) putting D) finding 3. A) help B) ensure C) let D) organize 4. A) hope B) intention C) aim D) wish 5. A) ill B) bad C) off D) wrong 6. A) wound B) hurt C) injury D) accident 7. A) persuade B) advise C) suggest D) order 8. A) cut out B) cut off C) cut back D) cut down 9. A) work B) function C) manage D) advance 10. A) way B) method C) basis D) style 11. A) crowds B) couples C) twins D) doubles 12. A) move B) push C) make D) insist 13. A) stronger B) better C) more D) harder 14. A) matter B) point C) way D) doubt 15. A) Compared B) Contrary C) Different D) Unlike
Answer» 1- C) anything 2- B) gaining 3- A) help 4- C) aim 5- D) wrong 6- C) injury 7- B) advise 8- D) cut down 9- A) work 10- C) basis 11- B) couples 12- B) push 13- D) harder 14- A) matter 15- D) Unlike

23.

What does a personal trainer do? I meet each client to discuss what he or she is looking for. It could be (1) from improving general fitness to losing - or, in a few cases, - (2) weight. I then devise a training program for them which I think will (3) them to achieve their (4). If they’ve had anything (5) with them, say a back (6), I speak to their doctor who will (7) me what not to do. If someone eats and drinks too much, it’s easy to suggest they (8) , but if that doesn’t (9), I look at their diet. I prefer to train on a one-to-one (10), though I do sometimes work with (11) if they are friends and want to train together. Who needs a personal trainer? I think most people do. A trainer will (12) you to try (13). You achieve 20 per cent more than you could training alone, no (14) how dedicated you are. I’ve got a lot of Americans on my books, and I actually prefer them. (15) most Brits, who still haven’t really got the idea, Americans know how to work out. 1. A) nothing B) everything C) anything D) something 2. A) adding B) gaining C) putting D) finding 3. A) help B) ensure C) let D) organize 4. A) hope B) intention C) aim D) wish 5. A) ill B) bad C) off D) wrong 6. A) wound B) hurt C) injury D) accident 7. A) persuade B) advise C) suggest D) order 8. A) cut out B) cut off C) cut back D) cut down 9. A) work B) function C) manage D) advance 10. A) way B) method C) basis D) style 11. A) crowds B) couples C) twins D) doubles 12. A) move B) push C) make D) insist 13. A) stronger B) better C) more D) harder 14. A) matter B) point C) way D) doubt 15. A) Compared B) Contrary C) Different D) Unlike

Answer»

1- C) anything

2- B) gaining

3- A) help

4- C) aim

5- D) wrong

6- C) injury

7- B) advise

8- D) cut down

9- A) work

10- C) basis

11- B) couples

12- B) push

13- D) harder

14- A) matter

15- D) Unlike

Discussion

24.	Stop a minute, think what you ___ . A) are saying B) say C) says D) is saying E) has said
Answer» Correct option is A) are saying

Discussion

25.	From the data given below about an economy. Calculate (a) investment expenditure and (b) consumption expenditure (i) Equilibrium level of income 5000 (ii) Autonomous consumption 500 (iii) Marginal propensity to consumer 0.4
Answer» Income Y = 5,000, Autonomous Consumption, `bar(c) = 5000, MPC, bar(c) = 0.4` Income = Y = Rs 5000 `MPC = c = 0.40` Now `C = bar(c) + cY` `bar(c) = 500 + 0.40 xx 5000` `bar(c) = 500 + 2000` `bar(c) = 2500` `Y = C + I` `5000 = 2500 + I` `I = 2500` `:.` (a) I = Rs 2500 (b) c = Rs 2500

Discussion

26.	The children have their teeth _____ every six months. A) check B) checking C) to check D) checked
Answer» Correct option is D) checked

Discussion

27.	Mind you don’t get your fingers _____ in the door. A) to catch B) catching C) caught D) catch
Answer» Correct option is C) caught

Discussion

28.	Who is author of the book ‘The Judgement: Inside Story of the Emergency in India’?1. KM Munshi2. Jawaharlal Nehru3. Indira Gandhi4. Kuldip Nayar
Answer» Correct Answer - Option 4 : Kuldip Nayar The correct answer is Kuldip Nayar. Kuldip Nayar is author of the book ‘The Judgement: Inside Story of the Emergency in India’. A revelatory narration of the nineteen dark months of emergency in India Kuldip Nayar was an Indian journalist, syndicated columnist, human rights activist, author. He was former High Commissioner of India to the United Kingdom noted for his long career as a left-wing political commentator. He was also nominated as a member of the Upper House of the Indian Parliament in 1997. Books: India after Nehru, In Jail, The Martyr, scoop! without fear, India house Jawaharlal Nehru : Jawaharlal Nehru was an Indian independence activist and, the first Prime Minister of India, as well as a central figure in Indian politics both before and after independence. He was also known as Pandit Nehru due to his roots with the Kashmiri Pandit community, while Indian children knew him better as Chacha Nehru. Nehru was honoured with Bharat Ratna Award in the year 1955. Books : The discovery of India, An Autobiography, China, Spain and the war, Letters from a father to his. KM Munshi : Kanhaiyalal Maneklal Munshi, popularly known by his pet name Ghanshyam Vyas. He was an Indian independence movement activist, politician, writer and educationist from Gujarat state. A lawyer by profession, he later turned to author and politician. He is a well-known name in Gujarati literature. Books : Lopamudra, Lomaharshini, The glory of patan, Akhand Hindustan, The book of Satyabhama. Indira Gandhi : She was an Indian politician and a central figure of the Indian National Congress. She was the first only female Prime Minister of India. Indira Gandhi was the daughter of Jawaharlal Nehru, the first prime minister of India. Books : My truth, a journey of friendship, of man and his environment

28.

Who is author of the book ‘The Judgement: Inside Story of the Emergency in India’?1. KM Munshi2. Jawaharlal Nehru3. Indira Gandhi4. Kuldip Nayar

Answer» Correct Answer - Option 4 : Kuldip Nayar

The correct answer is Kuldip Nayar.

Kuldip Nayar is author of the book ‘The Judgement: Inside Story of the Emergency in India’.
- A revelatory narration of the nineteen dark months of emergency in India
Kuldip Nayar was an Indian journalist, syndicated columnist, human rights activist, author.
- He was former High Commissioner of India to the United Kingdom noted for his long career as a left-wing political commentator.
- He was also nominated as a member of the Upper House of the Indian Parliament in 1997.
- Books:
  - India after Nehru, In Jail, The Martyr, scoop! without fear, India house

Jawaharlal Nehru :
- Jawaharlal Nehru was an Indian independence activist and, the first Prime Minister of India, as well as a central figure in Indian politics both before and after independence.
- He was also known as Pandit Nehru due to his roots with the Kashmiri Pandit community, while Indian children knew him better as Chacha Nehru.
- Nehru was honoured with Bharat Ratna Award in the year 1955.
- Books :
  - The discovery of India, An Autobiography, China, Spain and the war, Letters from a father to his.
KM Munshi :
- Kanhaiyalal Maneklal Munshi, popularly known by his pet name Ghanshyam Vyas.
- He was an Indian independence movement activist, politician, writer and educationist from Gujarat state.
- A lawyer by profession, he later turned to author and politician.
- He is a well-known name in Gujarati literature.
- Books :
  - Lopamudra, Lomaharshini, The glory of patan, Akhand Hindustan, The book of Satyabhama.
Indira Gandhi :
- She was an Indian politician and a central figure of the Indian National Congress.
- She was the first only female Prime Minister of India.
- Indira Gandhi was the daughter of Jawaharlal Nehru, the first prime minister of India.
- Books :
  - My truth, a journey of friendship, of man and his environment

Discussion

29.	Why is the extraction of copper from pyrites more difficult than that from its oxide ore through reduction?
Answer» The standard free enegy `(trianglel_(f)G^(ɵ))` of formation of `Cu_2S` is more negative than those of `CS_2` and `H_2S(CS_2` is in fact, an endothermic compound). Therefore neither corbon nor hydrogen can reduce `Cu_2S` to `Cu` metal. `Cu_2S+H_2to2Cu+H_2S,2Cu_2S+Cto4Cu+CS_2` in contrast `triangle_(f)G^(ɵ)` of `Cu_2O` is less `-ve` than that of CO and hence carbon can easily reduce `Cu_2O` to `Cu` `Cu_2O+Cto2Cu+CO(g)` Hence the extraction of copper from pyrite is difficult than from its oxide ore through reduction. Alternatively, `(triangle_(f)G^(ɵ))/(T)` line for CO has a negative slope and there is no compound CS analogous to CO with a steep negative `(triangle_(f)G^(ɵ))/(T)` line. Thus carbon is a good reducing agent for oxides but a poor reducing agent for sulphides. Therefore sulphides are normally roasted in air to form oxides before reducing them with Carbon.

Discussion

30.	In the metallurgy of sulphide ores which also contain other sulphide impurities, depressants are added to selectively allow the ore particles to come to froth while the sulphide impurity remains in solution. Suppose we have a mixture of Galena and Zinc and NaCN is added. Select the correct option:(1) PbS comes to froth whereas zinc froth whereas zinc forms a complex [Zn(CN)4]2- (2) PbS comes to froth whereas zinc forms a complex [Zn(CN)6]4- (3) ZnS comes to froth whereas lead forms a complex [Pb(CN)4]2-(4) ZnS comes to froth whereas lead forms a complex [Pb(CN)6]2-
Answer» Answer (1) CN^– ions have greater affinity for zinc and ZnS is retained in solution as Zn (CN)₄^2–

30.

In the metallurgy of sulphide ores which also contain other sulphide impurities, depressants are added to selectively allow the ore particles to come to froth while the sulphide impurity remains in solution. Suppose we have a mixture of Galena and Zinc and NaCN is added. Select the correct option:(1) PbS comes to froth whereas zinc froth whereas zinc forms a complex [Zn(CN)4]2- (2) PbS comes to froth whereas zinc forms a complex [Zn(CN)6]4- (3) ZnS comes to froth whereas lead forms a complex [Pb(CN)4]2-(4) ZnS comes to froth whereas lead forms a complex [Pb(CN)6]2-

Answer»

Answer (1)

CN^– ions have greater affinity for zinc and ZnS is retained in solution as Zn (CN)₄^2–

Discussion

31.	which method of refining will you suggest for an element in which impurities present have chemical properties close to the properties of that element
Answer» Zone refining is the method for an element in which impurities present have chemical properties close to the properties of those elements.

Discussion

32.	Consider the following statements:S1: Hydraulic washing is not preferable if the ore and the impurities have similar specific gravities.S2: Magnetic separation cannot be used if the ore is non-magnetic in nature.S3: Collectors have hydrophobic and hydrophilic part they occupies the air water interface and entraps the particles.The correct statement(s) among the ones given is/are(1) S2 only (2) S1 and S3 Only(3) S2 and S3 Only(4) S1, S2 and S3
Answer» Answer (2) Magnetic separation can be used if either the ore or impurity is magnetic in nature

32.

Consider the following statements:S1: Hydraulic washing is not preferable if the ore and the impurities have similar specific gravities.S2: Magnetic separation cannot be used if the ore is non-magnetic in nature.S3: Collectors have hydrophobic and hydrophilic part they occupies the air water interface and entraps the particles.The correct statement(s) among the ones given is/are(1) S2 only (2) S1 and S3 Only(3) S2 and S3 Only(4) S1, S2 and S3

Answer»

Answer (2)

Magnetic separation can be used if either the ore or impurity is magnetic in nature

Discussion

33.	The most stable and the least stable resonating structures are respectively A. I and IVB. I and IIIC. II and IIID. III and II
Answer» Correct Answer - C In structure II, both the rings are aromatic hence II is most stable structure but in structure III, one ring contain `8pi` electron hence antiaromatic , hence structure III is least stable structure.

Discussion

34.	Explain crystal field stabilization energy and its significance
Answer» The crystal field stabilisation energy (CFSE) is the gain in the energy achieved by preferential filling up of orbitals by electrons. It is usually less than or equal to 0. When it is equal to 0, the complex is unstable. The magnitude of CFSE depends on the number and nature of ligands and the geometry of the complex.

Discussion

35.	(1.) If \( T={ }_{B}^{A}\left(\begin{array}{cc}0.25 & 0.75 \\ 0.3 & \alpha\end{array}\right) \) is a transition probability matrix, then the value of \( \alpha \) isa) \( 0.5 \)b) \( 0.7 \)c) 0/d) \( 0.6 \)2. Rank of matrix \( \left(\begin{array}{cccc}1 & -1 & 2 & 0 \\ 0 & 2 & 0 & 3\end{array}\right) \) isa) 1b) 0c) 2d) \( -1 \)
Answer» (1) ∵ Row sum of a transition probability matrix must be 1. ∴ 0.3 + α = 1 (sum of probability of 2^nd row) \(\Rightarrow\) α = 1 - 0.3 = 0.7 (2) \( \begin{bmatrix} 1 & -1 & 2&0 \\[0.3em] 0 & 2 & 0&3 \\[0.3em] \end{bmatrix}\) ∴ Rank of matrix is 2.

35.

(1.) If \( T={ }_{B}^{A}\left(\begin{array}{cc}0.25 & 0.75 \\ 0.3 & \alpha\end{array}\right) \) is a transition probability matrix, then the value of \( \alpha \) isa) \( 0.5 \)b) \( 0.7 \)c) 0/d) \( 0.6 \)2. Rank of matrix \( \left(\begin{array}{cccc}1 & -1 & 2 & 0 \\ 0 & 2 & 0 & 3\end{array}\right) \) isa) 1b) 0c) 2d) \( -1 \)

Answer»

(1) ∵ Row sum of a transition probability matrix must be 1.

∴ 0.3 + α = 1

(sum of probability of 2^nd row)

\(\Rightarrow\) α = 1 - 0.3 = 0.7

(2) \( \begin{bmatrix} 1 & -1 & 2&0 \\[0.3em] 0 & 2 & 0&3 \\[0.3em] \end{bmatrix}\)

∴ Rank of matrix is 2.

Discussion

36.	If `sqrt(y-x)+sqrt(y+x)=1" then "(d^(3)y)/(dx^(3))` at x=1 is equal toA. 2B. 1C. 0D. Does bot exist
Answer» Correct Answer - A `sqrt(y-x)+sqrt(y+x)=1` `y-x+y+x+2sqrt(y^(2)-x^(2))=1` `(2y-1)=-2sqrt(y^(2)-x^(2))` `4y^(2)-4y+1=4y^(2)-4x^(2)" (squaring on both sides)"` `4x^(2)-4y+1=0` `8x-4(dy)/(dx)=0rArr" "(dy)/(dx)=2` `"So, "(d^(2)y)/(dx)=2rArr(d^(3)y)/(dx^(3))=3`.

Discussion

37.	\( \left\|\begin{array}{cc}\log _{a} b & 1 \\ 1 & \log _{b} a\end{array}\right\| \)
Answer» we know: \( \left \|\begin{array}{cc} a & b \\ c & d \end{array} \right\| =ad-bc \) and also we know \( \log_a b \times \log_b a=1 \) \( \left \|\begin{array}{cc} \log_a b & 1 \\ 1 & \log_b a \end{array} \right\| =(\log_a b \times \log_b a) -(1 \times 1)=1-1=0 \)

Discussion

38.	The derivative of `y=sin^(-1)((3x+sqrt(16-16x^(2)))/(5))` with respect to x at `x=(sqrt(3))/(2)`, isA. -2B. 2C. -4D. does not exist
Answer» Correct Answer - A `y=sin^(-1)((3x+4sqrt(1-x^(2)))/(5))` `"Let "x=sintheta,thetain[(-pi)/(2),(pi)/(2)],y=sin^(-1)((3sintheta+4costheta)/(5))` `:.y=sin^(-1)(sin(theta+alpha))"where "tanalpha=(4)/(3)` Now, `(pi)/(4)ltalphalt(pi)/(3)," when "x=(sqrt(3))/(2),theta=(pi)/(2)," ":.(pi)/(2)lttheta+alpha,:.y=pi-(theta+alpha)` `y=pi-tan^(-1)((4)/(3))-sin^(-1)x,(dy)/(dx)=(-1)/(sqrt(1-x^(2))),:.(dy)/(dx)underset(x=(sqrt(3))/(2))" "=-2`.

Discussion

39.	Find the coordinates of all local optimum points and stationary-inflection points of the following function with necessary tests:f(x) = 3x4 + 4x3 – 12x2 + 5
Answer» We have, f(x) = 3x⁴ + 4x³ - 12x² + 5 ∴ f'(x) = 12x³ + 12x² - 24x = 12x (x²+x-2) = 12x (x²+2x-x-2) = 12x (x-1)(x+2) Therefore, f'(x) = 0 gives x = 0 or x = 1 or x = -2. Hence, critical points for given function are x = 0, x = -2 and x = 1. Now, f''(x) = 36x² + 24x - 24 ∵ f''(0) = -24 < 0 ∴ x = 0 is point of local maxima (By second derivative test) Also f''(1) = 36+24-24 = 36 > 0 ∴ x = 1 is point of local minima (By second derivative test) Now, f''(-2) = 36 x 4 + 24 x -2 - 24 = 144 - 48 - 24 = 144 - 72 = 72 > 0 ∴ x = -2 is point of local minima (By second derivative test) Now, f(0) = 5, f(1) = 3+4-12+5 = 12 - 12 = 0 f(-2) = 48 - 32 - 48 + 5 = -32+5 = -27 Hence, (1, 0) and (-2, -27) are point of local minima and (0, 5) is point of local maxima.

39.

Find the coordinates of all local optimum points and stationary-inflection points of the following function with necessary tests:f(x) = 3x4 + 4x3 – 12x2 + 5

Answer»

We have, f(x) = 3x⁴ + 4x³ - 12x² + 5

∴ f'(x) = 12x³ + 12x² - 24x

= 12x (x²+x-2)

= 12x (x²+2x-x-2)

= 12x (x-1)(x+2)

Therefore, f'(x) = 0 gives x = 0 or x = 1 or x = -2.

Hence, critical points for given function are x = 0, x = -2 and x = 1.

Now, f''(x) = 36x² + 24x - 24

∵ f''(0) = -24 < 0

∴ x = 0 is point of local maxima (By second derivative test)

Also f''(1) = 36+24-24 = 36 > 0

∴ x = 1 is point of local minima (By second derivative test)

Now, f''(-2) = 36 x 4 + 24 x -2 - 24

= 144 - 48 - 24

= 144 - 72

= 72 > 0

∴ x = -2 is point of local minima (By second derivative test)

Now, f(0) = 5, f(1) = 3+4-12+5 = 12 - 12 = 0

f(-2) = 48 - 32 - 48 + 5 = -32+5 = -27

Hence, (1, 0) and (-2, -27) are point of local minima and (0, 5) is point of local maxima.

Discussion

40.	Match the pair of ores given in column-I with type(s) of ores given in column-II. `{:("Column-I","Column-II"),((A)"Limonite, Cuprite",(p)"Sulphate ore"),((B)"Calamine, Cerussite",(q)"Carbonate ore"),(( C)"Pyragyrite , Zinc blende",(r)"Oxide ore"),((D) "Anglesite,Langbeinite",(s)"Sulphide ore"),(" " ,(t)"Halide ore"):}`.
Answer» Correct Answer - A`to`r ; B`to`q ; C`to` s ; D`to`p (A)Limonite is `Fe_2O_3` and Cuprite is `Cu_2O` (B) Calamine is `ZnCO_3` and Cerussite is `PbCO_3`. (C ) Pyragyrite of `Ag_3SbS_3` and Zinc blende is ZnS. (D)Anglesite is `PbSO_4` and Langbeinite is `K_2Mg_2(SO_4)_3`

Discussion

41.	`"Let"f(x)=Lim_(ntooo) ((x^(2)+4x+5+e^(x)+sgn(e^(-x)))^(n)-5)/(2(x^(2)+4x+5+e^(x)+sgn(e^(-x)))^(n)+9)` thenA. f(x) is discontinuous at x=0.B. f(x) is discontinuous at infinite number of points.C. f(x) is continuous but non-derivable for all `x in R`.D. f(x) is continuous and derivable for `x inR`.
Answer» Correct Answer - A `"As, "x^(2)+4x+5+e^(x)+"sgn"(e^(-x))=(x+2)^(2)+2+e^(x)gt2`. `"So, "f(x)=(1)/(2)AAx in R`.

Discussion

42.	Match the reactions given in column(I) with the appropriate method(s) listed in column (II). `{:("Column-I","Column-II"),((A)4 Au+8 NaCN+ 2 H_2O+O_2("air")to4 Na[Au(CN)_2]+4NaOH,(p)"Leaching"),((B)CuFeS_2+2 H_2SO_4toCuSO_4+FeSO_4+2 H_2O,(q)"Smelting"),(( C)Fe_2O_4+4 COoverset(823K)to3 Fe+4CO_2,(r)"Roasting"),((D) MgCl_2. 6H_2O underset("Dry" HCl(g))overset(Delta)toMgCl_2+6H_2O,(s)"Calcination"),(" ",(t)"Hydrometallurgy"):}`
Answer» Correct Answer - A`to`p,t ; B`to`p,t ; C`to` q ; D`to`s (A)Gold dissolves in NaCN solution forming a soluble complex leaving behind impurities is called leaching process. Hence the extraction of gold is called hydrometallurgy. (B)Insoluble copper pyrites dissolves in `H_2SO_4` forming soluble `CuSO_4` is called leaching. Hence the extraction of copper is called hydrometallurgy (C )Reduction of `Fe_3O_4` by CO in blast furnace is smelting. (D)Heating `MgCl_2 6H_2O` in dry HCl gas to convert into anhydrous `MgCl_2` is calcination.

Discussion

43.	If {x} represents the fractional part of then `underset(0)overset(9)(f){sqrt(x)}dx` is equal toA. 5B. `(69)/(3)`C. `(79)/(3)`D. `(89)/(3)`
Answer» Correct Answer - A `underset(0)overset(9)(f){sqrt(x)}dx=underset(0)overset(9)(f)(sqrt(x)-[sqrt(x)])dx` `(x^(3//2))/(3//2)underset(0)overset(9)(\|)-(underset(0)overset(1)(f)0*dx+underset(1)overset(4)(f)1dx+underset(4)overset(9)(f)2dx)=18-13=5`

Discussion

44.	When did Mahatma Gandhi pass away?1. 13th January 19452. 30th January 19483. 4th May 19494. 30th June 1946
Answer» Correct Answer - Option 2 : 30^th January 1948 The correct answer is 30th January 1948. Mahatma Gandhi died on 30 January 1948 in Delhi. He was born on 2 October 1869. The political career Gandhi started in South Africa where he launched a Civil Disobedience Movement against the maltreatment meted out to Asian settlers. In 1916, he returned to India and took up the leadership of the National Freedom Struggle. Mahatma Gandhi led the national freedom struggle against British rule. Gandhiji launched many movements to force the British to concede India its Independence. The well-known being is Non-Co-operation Movement (1920), Civil Disobedience Movement (1930), and the Quit India Movement (1942). Gandhi wrote his famous autobiography under the title 'My Experiments with Truth'. Mahatma Gandhi is better known as the father of the Nation.

44.

When did Mahatma Gandhi pass away?1. 13th January 19452. 30th January 19483. 4th May 19494. 30th June 1946

Answer» Correct Answer - Option 2 : 30^th January 1948

The correct answer is 30th January 1948.

Mahatma Gandhi died on 30 January 1948 in Delhi.

He was born on 2 October 1869.
The political career Gandhi started in South Africa where he launched a Civil Disobedience Movement against the maltreatment meted out to Asian settlers.
In 1916, he returned to India and took up the leadership of the National Freedom Struggle.
Mahatma Gandhi led the national freedom struggle against British rule.
Gandhiji launched many movements to force the British to concede India its Independence.
The well-known being is Non-Co-operation Movement (1920), Civil Disobedience Movement (1930), and the Quit India Movement (1942).
Gandhi wrote his famous autobiography under the title 'My Experiments with Truth'.
Mahatma Gandhi is better known as the father of the Nation.

Discussion

45.	According to modem thinking, the law of diminishing returns applies to(a) Agriculture (b) Industry (c) Mining (d) All fields of production
Answer» (d) All fields of production

Discussion

46.	Who among the following constructed the Jagat Shiromani temple?1. Rani Kanakwati2. Man Singh I3. Jagat Singh4. Jai Singh I
Answer» Correct Answer - Option 1 : Rani Kanakwati The correct answer is Rani Kanakwati. Jagat Shiromani Temple: It was constructed by Rani Kanakwati. It is dedicated to Lord Vishnu and Meera bai. It is also known as Meera bai temple as Meera bai was a devotee of Lord Krishna and considered him as her husband. It is situated near the Amer palace. It was built in the memory of queen Kanakwati's son, Jagat Singh. Man Singh I: He was the Kachwaha Rajput Raja of Amer. He was the trusted general of the Mughal empire and also one among the Navratanas of Akbar's court. Queen Kanakwati was the wife of Man Singh I. Jagat Singh: He was the son of Man Singh I and queen Kanakwati. Jagat Shiromani Temple was built in his memory. Jai Singh I: He was the ruler of the kingdom of Amer from 1611 to 1667. He was also the senior general of the Mughal empire.

46.

Who among the following constructed the Jagat Shiromani temple?1. Rani Kanakwati2. Man Singh I3. Jagat Singh4. Jai Singh I

Answer» Correct Answer - Option 1 : Rani Kanakwati

The correct answer is Rani Kanakwati.

Jagat Shiromani Temple:
- It was constructed by Rani Kanakwati.
- It is dedicated to Lord Vishnu and Meera bai.
- It is also known as Meera bai temple as Meera bai was a devotee of Lord Krishna and considered him as her husband.
- It is situated near the Amer palace.
- It was built in the memory of queen Kanakwati's son, Jagat Singh.

Man Singh I:
- He was the Kachwaha Rajput Raja of Amer.
- He was the trusted general of the Mughal empire and also one among the Navratanas of Akbar's court.
- Queen Kanakwati was the wife of Man Singh I.
Jagat Singh:
- He was the son of Man Singh I and queen Kanakwati.
- Jagat Shiromani Temple was built in his memory.
Jai Singh I:
- He was the ruler of the kingdom of Amer from 1611 to 1667.
- He was also the senior general of the Mughal empire.

Discussion

47.	When a large number of investors in a country transfer investments elsewhere because of disturbed economic conditions, it is called(a) Transfer of Capital (b) Escape of Capital (c) Outflow of Capital (d) Flight of Capital
Answer» (d) Flight of Capital

Discussion

48.	In Economics, production means(a) Manufacturing (b) Making (c) Creating utility (d) Farming
Answer» (c) Creating utility

Discussion

49.	‘Golden Handshake Scheme’ is associated with(a) Inviting foreign companies (b) Private investment in public enterprises (c) Establishing joint enterprises (d) Voluntary retirement
Answer» (d) Voluntary retirement

Discussion

50.	Inflation occurs when aggregate supply is(a) More than aggregate demand (b) Less than aggregate demand (c) Equal to aggregate demand (d) None of these
Answer» (b) Less than aggregate demand

Discussion

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