100525 + Interview Questions in GENERAL QA IN GENERAL AWARENESS

1.	Accelerated motion is always due to
Answer» The accelerated motion of an object may be due to change in magnitude of velocity or direction of velocity or both.

Discussion

2.	One day Kamal saw that her mother was roasting peanuts in a pan (kadahi) in the kitchen and she had taken ordinary salt to roast the peanuts. She was surprised to observe that in spite of very high temperature, the salt does not melt and the peanuts also get roasted.1. The chemical name of common salt is :(a) Potassium chloride(b) Sodium carbonate(c) Sodium hydrogen carbonate(d) Sodium chloride2. Common salt is :(a) A covalent compound(b) An ionic compound formed by sharing electrons(c) An ionic compound formed by the transfer of electrons(d) Soluble in organic solvents3. Common salt is not a raw material for :(a) Bleaching powder(b) Plaster of Paris(c) Baking soda(d) Caustic soda4. Common salt is used as a raw material in the preparation of washing soda in which the number of molecules of water of crystallisation is :(a) 10(b) 7(c) 5(d) 2
Answer» 1. (d) sodium chloride sodium chloride (NaCl) 2. (c) An ionic compound formed by the transfer of electrons common salt is an ionic compound formed by the transfer of electrons Na \(\longrightarrow\) Na⁺ + e^- 1/2 Cl₂ + e^- \(\longrightarrow\) Cl^- Na⁺ + Cl^- \(\longrightarrow\) NaCl (Common salt) 3. (b) Plaster of paris When electricity is passed through an aqurous solution of common salt (brine NaCl(aq)), chlorine gas given off and sodium Hydroxide (Castic soda) is formed. 2 NaCl (aq) + 2H₂O(l) \(\overset{\text{elecrolysis}}{\longrightarrow}\) \(\underset{\text{Caustic soda}}{2NaOH} + Cl_2\)↑ + H₂↑ When chlorine which is evolved during electrolysis of NaCl passed through Ca(OH)₂ solution, bleaching powder is formed Ca(OH)₂ + Cl₂ \(\longrightarrow\) \(\underset{\text{bleaching powder}}{CaOCl_2}\) + H₂O CO₂ + H₂O + NH₃ + NaCl \(\longrightarrow\) \(\underset{\text{Baking soda}}{NaHCO_3} + NH_4Cl\) Plaster of paris is prepared by heating calcium sulphate dihydrate 2 CaSO₄ . 2H₂O \(\overset{\triangle}{\longrightarrow}\) \(\underset{\text{plaster of paris}}{2CaSO_4}\).H₂O Hence, NaCl (common salt) is not used as a raw material in plaster of paris. 4. (a) 10 Na₂CO₃ . 10H₂O

2.

One day Kamal saw that her mother was roasting peanuts in a pan (kadahi) in the kitchen and she had taken ordinary salt to roast the peanuts. She was surprised to observe that in spite of very high temperature, the salt does not melt and the peanuts also get roasted.1. The chemical name of common salt is :(a) Potassium chloride(b) Sodium carbonate(c) Sodium hydrogen carbonate(d) Sodium chloride2. Common salt is :(a) A covalent compound(b) An ionic compound formed by sharing electrons(c) An ionic compound formed by the transfer of electrons(d) Soluble in organic solvents3. Common salt is not a raw material for :(a) Bleaching powder(b) Plaster of Paris(c) Baking soda(d) Caustic soda4. Common salt is used as a raw material in the preparation of washing soda in which the number of molecules of water of crystallisation is :(a) 10(b) 7(c) 5(d) 2

Answer»

1. (d) sodium chloride

sodium chloride (NaCl)

2. (c) An ionic compound formed by the transfer of electrons

common salt is an ionic compound formed by the transfer of electrons

Na \(\longrightarrow\) Na⁺ + e^-

1/2 Cl₂ + e^- \(\longrightarrow\) Cl^-

Na⁺ + Cl^- \(\longrightarrow\) NaCl (Common salt)

3. (b) Plaster of paris

When electricity is passed through an aqurous solution of common salt (brine NaCl(aq)), chlorine gas given off and sodium Hydroxide (Castic soda) is formed.

2 NaCl (aq) + 2H₂O(l) \(\overset{\text{elecrolysis}}{\longrightarrow}\) \(\underset{\text{Caustic soda}}{2NaOH} + Cl_2\)↑ + H₂↑

When chlorine which is evolved during electrolysis of NaCl passed through Ca(OH)₂ solution, bleaching powder is formed

Ca(OH)₂ + Cl₂ \(\longrightarrow\) \(\underset{\text{bleaching powder}}{CaOCl_2}\) + H₂O

CO₂ + H₂O + NH₃ + NaCl \(\longrightarrow\) \(\underset{\text{Baking soda}}{NaHCO_3} + NH_4Cl\)

Plaster of paris is prepared by heating calcium sulphate dihydrate

2 CaSO₄ . 2H₂O \(\overset{\triangle}{\longrightarrow}\) \(\underset{\text{plaster of paris}}{2CaSO_4}\).H₂O

Hence, NaCl (common salt) is not used as a raw material in plaster of paris.

4. (a) 10

Na₂CO₃ . 10H₂O

Discussion

3.	Buna -N and Buna -S are-(A) Natural rubber(B) Synthetic rubber(C) Latex(D) Polythene
Answer» Answer is (B) Synthetic rubber

Discussion

4.	The twinkling of star is due to :(a) Scattering of light(b) Dispersion of light(c) Tyndall effect(d) Atmospheric refraction
Answer» Correct answer is (d) Atmospheric refraction The twinkling of stars is due to atmospheric refraction of star-light. the refraction of light caused by the earth's atmosphere having air layers of varying optical density is called atmospheric refraction.

4.

The twinkling of star is due to :(a) Scattering of light(b) Dispersion of light(c) Tyndall effect(d) Atmospheric refraction

Answer»

Correct answer is (d) Atmospheric refraction

The twinkling of stars is due to atmospheric refraction of star-light. the refraction of light caused by the earth's atmosphere having air layers of varying optical density is called atmospheric refraction.

Discussion

5.	______is rupture of red cells with release of intracellular haemoglobin can occur if the Antibody has the property of hemolysin. a) Agglutination b) Hemolysis c) Reaction
Answer» b) Hemolysis Hemolysis is rupture of red cells with release of intracellular haemoglobin can occur if the Antibody has the property of hemolysin.

5.

______is rupture of red cells with release of intracellular haemoglobin can occur if the Antibody has the property of hemolysin. a) Agglutination b) Hemolysis c) Reaction

Answer»

b) Hemolysis

Hemolysis is rupture of red cells with release of intracellular haemoglobin can occur if the Antibody has the property of hemolysin.

Discussion

6.	Number of (σ) sigma bonds in CH4 is-(A) 4(B) 3(C) 2(D) 1
Answer» Answer is (A) 4

Discussion

7.	A concave mirror of focal length 20 cm forms a real image having samesize of object. Which of the following options is correct?A) Object distance is 10 cm.B) Object distance is 40 cm.C) Object distance is 20 cm.D) Object distance is 30 cm.
Answer» We know that mirror formula 1/v + 1/u = 1/f Concave mirror having same size at the object v = u 1/u + 1/u = 1/f 2/u = 1/f u = 2f u = 2 x 20 u = 40 cm Option B is correct.

7.

A concave mirror of focal length 20 cm forms a real image having samesize of object. Which of the following options is correct?A) Object distance is 10 cm.B) Object distance is 40 cm.C) Object distance is 20 cm.D) Object distance is 30 cm.

Answer»

We know that mirror formula

1/v + 1/u = 1/f

Concave mirror having same size at the object

v = u

1/u + 1/u = 1/f

2/u = 1/f

u = 2f

u = 2 x 20

u = 40 cm

Option B is correct.

Discussion

8.	Name the moist heat method of cooking. a) Baking b) Radiation c) Broiling d) Simmering
Answer» Correct answer is d) Simmering

Discussion

9.	An object is placed in front of a concave lens. For all positions of the object the image formed is always :(a) Real, diminished and inverted(b) Virtual, diminished and erect(c) Real, enlarged and erect(d) Virtual, erect and enlarged
Answer» Correct answer is (b) Virtual, diminished and erect

Discussion

10.	Dettol is used as-(A) Disinfectant(B) Antiseptic(C) Antimalarial(D) All
Answer» Answer is (B) Antiseptic

Discussion

11.	____she needs is a good rest. A) That B) What C) The thing what D) Which
Answer» Correct option is B) What

Discussion

12.	A lens has a power of + 4.0 D. It is :(a) A convex lens of focal length 4 m(b) A concave lens of focal length 4 m(c) A convex lens of focal length 0.25 m(d) A concave lens of focal length 0.25 m
Answer» Correct answer is (c) A convex lens of focal length 0.25 m As P is '+ve', lens is convex. f(in meters) = 1/D = 1/4 = 0.25 m.

12.

A lens has a power of + 4.0 D. It is :(a) A convex lens of focal length 4 m(b) A concave lens of focal length 4 m(c) A convex lens of focal length 0.25 m(d) A concave lens of focal length 0.25 m

Answer»

Correct answer is (c) A convex lens of focal length 0.25 m

As P is '+ve', lens is convex.

f(in meters) = 1/D = 1/4 = 0.25 m.

Discussion

13.	What is the basic function of autoclave in laboratory? a) Drying b) Heating c) Sterilization
Answer» c) Sterilization Sterilization is the basic function of autoclave in laboratory.

13.

What is the basic function of autoclave in laboratory? a) Drying b) Heating c) Sterilization

Answer»

c) Sterilization

Sterilization is the basic function of autoclave in laboratory.

Discussion

14.	Copper metal is purified by which of the folloing method-(A) Electrolytic refining(B) Zone refining(C) Chromatography(D) None
Answer» Answer is (A) Electrolytic refining

Discussion

15.	One Faraday electricity is equal to how much Coulombs?(A) 96550(B) 96500(C) 96000(D) 95500
Answer» Answer is (B) 96500

Discussion

16.	The relation R = 2f is valid :(a) For concave mirrors but not for convex mirrors(b) For convex mirrors but not for concave mirrors(c) Neither for concave mirrors nor for convex mirrors(d) For both concave and convex mirrors
Answer» Correct answer is (d) For both concave and convex mirrors

Discussion

17.	They are one bite size piece of the decorated bread slice- a) Canapes b) Pasta c) Salads d) Sandwiches
Answer» Correct answer is a) Canapes

Discussion

18.	I’ll finish this. Then I’ll join you. When I _______ this, I’ll join you. A) was finished B) will finish C) finished D) have finished
Answer» Correct option is D) have finished

Discussion

19.	Is this ____ looking for? A) you were B) that you were C) what you were D) which you were
Answer» Correct option is C) what you were

Discussion

20.	I’ve written it down for her, _______ she forgets it. A) so as to B) therefore C) in case D) in order to
Answer» Correct option is C) in case

Discussion

21.	An object of height 3.0 cm is placed vertically on the principal axis of a convex lens. when the object distance is -37.5 cm. an image of height -2.0 cm is formed at a distance of 25.0 cm from the lens. Next, the same object is placed vertically at 25.0 cm from the lens. In this situation the image distance v and height h of the image is (according to the new cartesian sign convention) :(a) v = + 37.5 cm; h = + 4.5 cm(b) v = -37.5 cm; h = + 4.5 cm(c) v = + 37.5 cm; h = -4.5 cm(d) v = -37.5 cm; h = -4.5 cm
Answer» Correct answer is (c) v = + 37.5 cm; h = -4.5 cm In I^st case, object is beyond c, so image is at 25 cm from the lens in other side. but when object is at 25 cm, (i.e, between f and c), image will be longer and inverted (real) and beyond c, on the other side. putting sign conventions, v = + 37.5 cm, but h = -4.5 cm.

21.

An object of height 3.0 cm is placed vertically on the principal axis of a convex lens. when the object distance is -37.5 cm. an image of height -2.0 cm is formed at a distance of 25.0 cm from the lens. Next, the same object is placed vertically at 25.0 cm from the lens. In this situation the image distance v and height h of the image is (according to the new cartesian sign convention) :(a) v = + 37.5 cm; h = + 4.5 cm(b) v = -37.5 cm; h = + 4.5 cm(c) v = + 37.5 cm; h = -4.5 cm(d) v = -37.5 cm; h = -4.5 cm

Answer»

Correct answer is (c) v = + 37.5 cm; h = -4.5 cm

In I^st case, object is beyond c, so image is at 25 cm from the lens in other side. but when object is at 25 cm, (i.e, between f and c), image will be longer and inverted (real) and beyond c, on the other side.

putting sign conventions,

v = + 37.5 cm, but h = -4.5 cm.

Discussion

22.	Formula of sucrose is-(A) C12H22O12(B) C12H22O11(C) C12H24O11(D) C12H22O10
Answer» Answer is (B) C₁₂H₂₂O₁₁

Discussion

23.	That she was chosen Miss Turkey _______. A) made me happy B) nobody was glad about it C) everybody approved it D) everyone present voted in her favor
Answer» Correct option is A) made me happy

Discussion

24.	Give me two ______ cake, please.A) piece B) pieces C) slice D) pieces of
Answer» Correct option is D) pieces of

Discussion

25.	She dressed the child in a heavy overcoat, _______ he should catch cold. A) because B) therefore C) howeverD) lest
Answer» Correct option is D) lest

Discussion

26.	Second period of periodic table contains elements:(A) 2(B) 8(C) 18(D) 32
Answer» Answer is (B) 8

Discussion

27.	Whether they do it or not _______. A) don’t make any difference B) depends on various factors C) created a big problem D) will cause a lot of disturbance
Answer» Correct option is B) depends on various factors

Discussion

28.	Which of the following does the negative sign in the power -3 D signify? A. The focus is on the same side of the lens as the object. B. The focus is on the opposite side of the lens as the object. C. The principal focus is situated outside the principal axis. D. The focal length on one side of the lens is smaller than that on the other.
Answer» Correct option is: A. The focus is on the same side of the lens as the object.

Discussion

29.	Which of the two lenses can form a real image? A. only the lens with power -3 D B. only the lens with power 4 D C. both the lenses D. neither of the lenses
Answer» Correct option is: B. only the lens with power 4 D

Discussion

30.	______ students are looking for their ball. A) ThatB) Those C) This D) They
Answer» Correct option is B) Those

Discussion

31.	A: Is this your suitcase? B: No, ______ is my suitcase. A) that B) these C) it D) they
Answer» Correct option is A) that

Discussion

32.	Oleum is composed of H2SO4 and which constituent?(A) SO2(B) SO3(C) H2S(D) HSO4(-)
Answer» Answer is (B) SO₃

Discussion

33.	I am satisfied _______. A) that she came third in the competition. B) it was our victory against enemies C) what you promised to do D) will make her happy, I believe
Answer» Correct option is A) that she came third in the competition

Discussion

34.	Please hand me ______ dictionary. A) that B) these C) it D) them
Answer» Correct option is A) that

Discussion

35.	Nitrogen & Oxygen are-(A) Metals(B) Non-metals(C) Metalloids(D) None
Answer» Answer is (B) Non-metals

Discussion

36.	Find the oxidation number of Cu in the complex ion: [Cu(NH3)4]2+
Answer» [Cu(NH₃)₄]²⁺ ⇒ x + 0 = 2 ⇒ x = 2 Oxidatioin no. of Cu is +2.

36.

Find the oxidation number of Cu in the complex ion: [Cu(NH3)4]2+

Answer»

[Cu(NH₃)₄]²⁺ ⇒ x + 0 = 2

⇒ x = 2

Oxidatioin no. of Cu is +2.

Discussion

37.	The fact that they blamed us for the accident _______. A) which was not our fault B) was surprising C) at which a person was killed D) I wasn’t involved
Answer» Correct option is B) was surprising

Discussion

38.	CH3 CH2 NH2 is known as-(A) Ethyl amine(B) Propyl amine(C) Methyl amine(D) Ammonia
Answer» Answer is (A) Ethyl amine

Discussion

39.	The dictionary belongs _____ me.A) at B) to C) from D) with
Answer» Correct option is B) to

Discussion

40.	Name the element present in Hemoglobin.
Answer» Elements present in Hemoglobin in Iron.

Discussion

41.	The name of the compound OH-(A) Benzene hydroxide(B) Phenol(C) Phenyl(D) Benzyl Alcohol
Answer» Answer is (B) Phenol

Discussion

42.	They blamed Peter _____ the failure. A) on B) about C) with D) for
Answer» Correct option is D) for

Discussion

43.	The two scientists arrived _____ the same conclusion quite independently. A) to B) at C) on D) in
Answer» Correct option is B) at

Discussion

44.	Moslems believe _____ God. A) in B) to C) at D) with
Answer» Correct option is A) in

Discussion

45.	White and yellow phosphorous are-(A) Allotropes(B) Isomers(C) Isobars(D) Isotones
Answer» Answer is (A) Allotropes

Discussion

46.	What do you mean by BOD and COD?
Answer» COD or Chemical Oxygen Demand is the total measurement of all chemicals (organics & in-organics) in the water / waste water; BOD is a measure of the amount of oxygen that require for the bacteria to degrade the organic components present in water / waste water. The ratio of BOD/COD is about COD is higher than that of BOD; maximum of up to 4 times in medium scale industries; but it varies based on the industrial process and nature of the raw materials used;

46.

What do you mean by BOD and COD?

Answer»

COD or Chemical Oxygen Demand is the total measurement of all chemicals (organics & in-organics) in the water / waste water;

BOD is a measure of the amount of oxygen that require for the bacteria to degrade the organic components present in water / waste water.

The ratio of BOD/COD is about COD is higher than that of BOD; maximum of up to 4 times in medium scale industries; but it varies based on the industrial process and nature of the raw materials used;

Discussion

47.	Write the monomer of Teflon?
Answer» Tetrofluoroethylene (C₂F₄) is the monomer of teflon.

Discussion

48.	What are amino acids?
Answer» Amino acids contains one amino group (-NH₂), an acidic corboxyl (-COOH) functional group and a side chain specific to each amino acid.

Discussion

49.	Between an annual and a perennial plant, which one has a shorterjuvenile phase? Give one reason.
Answer» An annual has a shorter juvenile phase. Since its entire life cycle has to be completed in one growing season, its juvenile phase is shorter.

Discussion

50.	Reductive alkylation is the term applied to the process of introducing alkyl groups into ammonia or a primary or secondary amine by means of an aldehyde or ketone in the presence of a reducing agent. The present discussion is limited to those reductive alkylations in which the reducing agent is hydrogen and a catalyst or "nascent" hydrogen, usually from a metal acid combination; most of these reductive alkylations have been carried out with hydrogen and a catalyst. The principal variation excluded is that in which the reducing agent is formic acid or one of its derivatives; this modification is known as the Leuckart reaction. The process of reductive alkylation of ammonia consists in the addition of ammonia to a carbonyl compound and reduction of the addition compound or its dehydration product. The reaction usually is carried out in ethanol solution when the reduction is to be effected catalyticallySince the primary amine is formed in the presence of the aldehyde it may react in the same way as ammonia, yielding an addition compound, a Schiff's base (RCH= NCH2R) and finally, a secondary amine. Similarly, the primary amine may react with the imine, forming an addition product which also is reduced to a secondary amine Finally, the secondary amine may react with either the aldehyde or the imine to give products which are reduced to tertiary amines.Similar reactions may occur when the carbonyl compound employed is a ketone.Q 1. Ethanal on reaction with ammonia forms an imine (X) which on reaction with nascent hydrogen gives (Y). Identify ‘X’ and ‘Y’.A. X is CH3CH=NH and Y is CH3NH2B. X is CH3CHOHNH2 and Y is CH3CH2NH2C. X is CH3CHOHNH2 and Y is CH3NH2D. X is CH3CH=NH and Y is CH3CH2NH2Q 2. Acetaldehyde is reacted with ammonia followed by reduction in presence of hydrogen as a catalyst. The primary amine so formed further reacts with acetaldehyde. The Schiff’s base formed during the reaction is:A. CH3CH=NHCH3B. CH3CH=NHCH2CH3C. CH3=NHCH2CH3D. CH3CH2CH=NHCH3Q 3. The reaction of ammonia and its derivatives with aldehydes is called:A. Nucleophilic substitution reactionB. Electrophilic substitution reactionC. Nucleophilic addition reactionD. Electrophilic addition reactionQ 4. (CH3CH2CH2)2NH + CH3CH2CHO\(\longrightarrow\) P \(\underset{\longrightarrow}{2[H]}\) QThe compound Q is:A. (CH3CH2CH2)3NB. (CH3CH2CH2)2N(CH2CH3)C. (CH3CH2)3ND. (CH3CH2)2NHQ 5. Reductive alkylation of ammonia by means of an aldehyde in presence of hydrogen as reducing agents results in formation of:A. Primary aminesB. Secondary aminesC. Tertiary aminesD. Mixture of all three amines
Answer» 1 (D) X is CH₃CH=NH and Y is CH₃CH₂NH₂ 2 (B) CH₃CH=NHCH₂CH₃ 3 (C) Nucleophilic addition reaction 4 (A) (CH₃CH₂CH₂)₃N 5 (D) Mixture of all three amines

50.

Reductive alkylation is the term applied to the process of introducing alkyl groups into ammonia or a primary or secondary amine by means of an aldehyde or ketone in the presence of a reducing agent. The present discussion is limited to those reductive alkylations in which the reducing agent is hydrogen and a catalyst or "nascent" hydrogen, usually from a metal acid combination; most of these reductive alkylations have been carried out with hydrogen and a catalyst. The principal variation excluded is that in which the reducing agent is formic acid or one of its derivatives; this modification is known as the Leuckart reaction. The process of reductive alkylation of ammonia consists in the addition of ammonia to a carbonyl compound and reduction of the addition compound or its dehydration product. The reaction usually is carried out in ethanol solution when the reduction is to be effected catalyticallySince the primary amine is formed in the presence of the aldehyde it may react in the same way as ammonia, yielding an addition compound, a Schiff's base (RCH= NCH2R) and finally, a secondary amine. Similarly, the primary amine may react with the imine, forming an addition product which also is reduced to a secondary amine Finally, the secondary amine may react with either the aldehyde or the imine to give products which are reduced to tertiary amines.Similar reactions may occur when the carbonyl compound employed is a ketone.Q 1. Ethanal on reaction with ammonia forms an imine (X) which on reaction with nascent hydrogen gives (Y). Identify ‘X’ and ‘Y’.A. X is CH3CH=NH and Y is CH3NH2B. X is CH3CHOHNH2 and Y is CH3CH2NH2C. X is CH3CHOHNH2 and Y is CH3NH2D. X is CH3CH=NH and Y is CH3CH2NH2Q 2. Acetaldehyde is reacted with ammonia followed by reduction in presence of hydrogen as a catalyst. The primary amine so formed further reacts with acetaldehyde. The Schiff’s base formed during the reaction is:A. CH3CH=NHCH3B. CH3CH=NHCH2CH3C. CH3=NHCH2CH3D. CH3CH2CH=NHCH3Q 3. The reaction of ammonia and its derivatives with aldehydes is called:A. Nucleophilic substitution reactionB. Electrophilic substitution reactionC. Nucleophilic addition reactionD. Electrophilic addition reactionQ 4. (CH3CH2CH2)2NH + CH3CH2CHO\(\longrightarrow\) P \(\underset{\longrightarrow}{2[H]}\) QThe compound Q is:A. (CH3CH2CH2)3NB. (CH3CH2CH2)2N(CH2CH3)C. (CH3CH2)3ND. (CH3CH2)2NHQ 5. Reductive alkylation of ammonia by means of an aldehyde in presence of hydrogen as reducing agents results in formation of:A. Primary aminesB. Secondary aminesC. Tertiary aminesD. Mixture of all three amines

Answer»

1 (D) X is CH₃CH=NH and Y is CH₃CH₂NH₂

2 (B) CH₃CH=NHCH₂CH₃

3 (C) Nucleophilic addition reaction

4 (A) (CH₃CH₂CH₂)₃N

5 (D) Mixture of all three amines

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Accelerated motion is always due to

Buna -N and Buna -S are-(A) Natural rubber(B) Synthetic rubber(C) Latex(D) Polythene

The twinkling of star is due to :(a) Scattering of light(b) Dispersion of light(c) Tyndall effect(d) Atmospheric refraction

______is rupture of red cells with release of intracellular haemoglobin can occur if the Antibody has the property of hemolysin. a) Agglutination b) Hemolysis c) Reaction

Number of (σ) sigma bonds in CH4 is-(A) 4(B) 3(C) 2(D) 1

A concave mirror of focal length 20 cm forms a real image having samesize of object. Which of the following options is correct?A) Object distance is 10 cm.B) Object distance is 40 cm.C) Object distance is 20 cm.D) Object distance is 30 cm.

Name the moist heat method of cooking. a) Baking b) Radiation c) Broiling d) Simmering

An object is placed in front of a concave lens. For all positions of the object the image formed is always :(a) Real, diminished and inverted(b) Virtual, diminished and erect(c) Real, enlarged and erect(d) Virtual, erect and enlarged

Dettol is used as-(A) Disinfectant(B) Antiseptic(C) Antimalarial(D) All

____she needs is a good rest. A) That B) What C) The thing what D) Which

A lens has a power of + 4.0 D. It is :(a) A convex lens of focal length 4 m(b) A concave lens of focal length 4 m(c) A convex lens of focal length 0.25 m(d) A concave lens of focal length 0.25 m

What is the basic function of autoclave in laboratory? a) Drying b) Heating c) Sterilization

Copper metal is purified by which of the folloing method-(A) Electrolytic refining(B) Zone refining(C) Chromatography(D) None

One Faraday electricity is equal to how much Coulombs?(A) 96550(B) 96500(C) 96000(D) 95500

The relation R = 2f is valid :(a) For concave mirrors but not for convex mirrors(b) For convex mirrors but not for concave mirrors(c) Neither for concave mirrors nor for convex mirrors(d) For both concave and convex mirrors

They are one bite size piece of the decorated bread slice- a) Canapes b) Pasta c) Salads d) Sandwiches

I’ll finish this. Then I’ll join you. When I _______ this, I’ll join you. A) was finished B) will finish C) finished D) have finished

Is this ____ looking for? A) you were B) that you were C) what you were D) which you were

I’ve written it down for her, _______ she forgets it. A) so as to B) therefore C) in case D) in order to

Formula of sucrose is-(A) C12H22O12(B) C12H22O11(C) C12H24O11(D) C12H22O10

That she was chosen Miss Turkey _______. A) made me happy B) nobody was glad about it C) everybody approved it D) everyone present voted in her favor

Give me two ______ cake, please.A) piece B) pieces C) slice D) pieces of

She dressed the child in a heavy overcoat, _______ he should catch cold. A) because B) therefore C) howeverD) lest

Second period of periodic table contains elements:(A) 2(B) 8(C) 18(D) 32

Whether they do it or not _______. A) don’t make any difference B) depends on various factors C) created a big problem D) will cause a lot of disturbance

Which of the two lenses can form a real image? A. only the lens with power -3 D B. only the lens with power 4 D C. both the lenses D. neither of the lenses

______ students are looking for their ball. A) ThatB) Those C) This D) They

A: Is this your suitcase? B: No, ______ is my suitcase. A) that B) these C) it D) they

Oleum is composed of H2SO4 and which constituent?(A) SO2(B) SO3(C) H2S(D) HSO4(-)

I am satisfied _______. A) that she came third in the competition. B) it was our victory against enemies C) what you promised to do D) will make her happy, I believe

Please hand me ______ dictionary. A) that B) these C) it D) them

Nitrogen &amp; Oxygen are-(A) Metals(B) Non-metals(C) Metalloids(D) None

Find the oxidation number of Cu in the complex ion: [Cu(NH3)4]2+

The fact that they blamed us for the accident _______. A) which was not our fault B) was surprising C) at which a person was killed D) I wasn’t involved

CH3 CH2 NH2 is known as-(A) Ethyl amine(B) Propyl amine(C) Methyl amine(D) Ammonia

The dictionary belongs _____ me.A) at B) to C) from D) with

Name the element present in Hemoglobin.

The name of the compound OH-(A) Benzene hydroxide(B) Phenol(C) Phenyl(D) Benzyl Alcohol

They blamed Peter _____ the failure. A) on B) about C) with D) for

The two scientists arrived _____ the same conclusion quite independently. A) to B) at C) on D) in

Moslems believe _____ God. A) in B) to C) at D) with

White and yellow phosphorous are-(A) Allotropes(B) Isomers(C) Isobars(D) Isotones

What do you mean by BOD and COD?

Write the monomer of Teflon?

What are amino acids?

Between an annual and a perennial plant, which one has a shorterjuvenile phase? Give one reason.

Nitrogen & Oxygen are-(A) Metals(B) Non-metals(C) Metalloids(D) None