Explore topic-wise InterviewSolutions in Current Affairs.

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.	Observe the diagram. Which one of the following statement is correct?
Answer» B can REDUCE `AO_(2)` A can reduce `BO_(2)` B CANT reduce `AO_(2)` `AO_(2)` is thermodynamically more stable than `BO_(2)` SOLUTION :B can reduce `AO_(2)`

2.	Observe the compound 'M' If in this compound X=Total number of asymmetric C^(*) atoms Y= Number of similar asymmetric C^(*) atoms Z= Number of optically active stereoisomers W= Number of optically inactive isomers R= Number of geometrical orientations in space Report your answer as : X +Y +Z+ W+ R
Answer» ANSWER :12

3.	Ozone reacts with dry Iodine to form an oxide having ______ Oxygen atoms in its molecule.
Answer» Solution :DRY `I_(2)` is oxidised to YELLOW `I_(4)O_(9). 2I_(2)+9O_(3) to I_(4)O_(9)+9O_(2)`

4.	O_3reacts with CH_2 = CH_2to form ozonide. On hydrolysis it forms ...
Answer» ETHYLENE oxide HCHO `CH_3CHO` `{:(CH_2OH),(\|),(CH_2OH):}` SOLUTION :HCHO

5.	O_(3) reacts with CH_(2)=CH_(2) to form ozonide. On hydrolysis it forms __________.
Answer» ETHYLENE OXIDE `HCHO` Ethylene glycol Ethyl alcohol Answer :B

6.	O_3 is soluble in
Answer» WATER `CS_(2)` TURPENTINE oil ammonia Answer :C

7.	O_3 is oxidising agent
Answer» OXIDISING agent reducing agent both (A) and (B) NONE of these Answer :A

8.	O_3 does not give ozonide with
Answer» 2-Butene Benzene 2-Pentyne NEOPENTANE SOLUTION :`O_3` does not GIVE OZONIDES with ALKANE

9.	O_3 is made from O_2 :
Answer» By OXIDATION at high temperature By oxidation USING a catalyst By CONVERSION at high pressure By silent ELECTRIC discharge Answer :D

10.	O_3 is absorbed by caustic soda.is it true or false ?
Answer» SOLUTION :TURPENTINE OIL

11.	O_2^(2-) is isoelectronic with
Answer» `H_2` `N_2` `F_2` S Answer :C

12.	O_2 required for complete oxidation of 1 litre of ethane at NTP is:
Answer» 3.5 litre 0.156 mole 5.00 g Allof these Answer :C

13.	O_2 molecule is
Answer» PARAMAGNETIC DIAMAGNETIC FERROMAGNETIC NONE of these ANSWER :A

14.	O_(2-) ions are arranged in ccp in spinel structure. A^(2+) ions occupy 1//8 of TV_(s) and B^(o+) ions occupy half of OV . The void volume of unit cell = 0.11 Å. Find the value of A ?
Answer» Solution :(REFER SECTION `1.24.7`) VOID volume `= 0.22//"unit"` volume of unit CELL ` `0.11 Å = 0.22 rArr A = 2`

15.	O_2 is bubbled through water at 293K, assuming that O_2 exerts a partial pressure of 0.98 bar, the solubility of O_2 in gm.L^(-1) is (Henry's law constant = 34 k bar)
Answer» 0.025 0.05 0.1 0.2 Answer :B

16.	O_2 is denser than air and therefore it is collected in:
Answer» SPIRIT `H_2O` Mercury Kerosene oil Answer :B

17.	O_2 is absorbed by lime water. Is it true or false?
Answer» SOLUTION :ALKALINE PYROGALLOL

18.	"o-Xylene"overset(HNO_(3))(to)Xoverset("phenol")underset(H_(2)SO_(4))(to)Y. The product is
Answer» PHTHALIC acid Isophthalic acid Phenolphthalein o-Hydroxysulphonic acid Solution :

19.	o- xylene on oxidation gives
Answer» PHTHALIC ACID isophthalic acid terephthalic acid CITRIC acid ANSWER :A

20.	o-Toluic acid on reaction with Br_(2)+Fe gives
Answer» SOLUTION :`CH_(3)` is o,p-directing and COOH is m-directing both these effects REINFORCE each other and hence SUBSTITUTION OCCURS at position p- to `CH_(3)` and m- to COOH group, i.e., option (C) is correct.

21.	o-Toluic acid on reaction with Br_(2) + Fe gives
Answer» ANSWER :C

22.	o-Phenylenediamine has a structure
Answer» None of these Solution : the divalent group `(C_(6)H_(4))` is CALLED as PHENYLENE group.

23.	o-nitrophenol is steam volatile due to ________ hydrogen bonding.
Answer» SOLUTION :INTRAMOLECULAR

24.	o-nitrophenol is more volatile than p-nitrophenol it is due to
Answer» Intermolecular HYDROGEN BONDING in o- nitrophenol Intramolecular hydrogen bonding in o- nitrophenol Intramolecular hydrogen bonding in p-nitrophenol More RESONATING structure of p-nitrophenol Answer :B

25.	o-nitrophenol can be easily stream distilled whereas p-nitrophenol cannot be. This is because of :
Answer» Strong intermolecular hydrogen BONDING in o-nitrophenol Strong INTRAMOLECULAR hydrogen bonding in o-nitrophenol Strong intramolecular hydrogen bonding in p-nitrophenol dipole moment of p-nitrophenol is LARGER than that of o-nitrophenol Answer :B

26.	O-nitro phenol is slightly soluble in water where as P-nitro phenol is more soluble. Give reason.
Answer» Solution :O-nitro phenol is slightly SOLUBLE in WATER and more volatile due to intra MOLECULAR hydrogen bonding, WHEREAS P-nitro phenol is more soluble in water and less volatile due to INTERMOLECULAR hydrogen bonding.

27.	o-Methoxybromobenzene is treated with sodamide and then with ammonia. The product formed is
Answer» o-Methoxyaniline Aniline Methoxybenzene m-Methoxyaniline Solution :

28.	o-nitro phenol has lower boiling point than p-nitro phenol. Why?
Answer» Solution :p-nitro PHENOL SHOWS inter MOLECULAR H bonding. So it has high BOILING point.

29.	o-Chlorotoluene reacts with sodamide in liquid NH_(3) to give o-toluidine and m-toluidine. Which of the following is an intermediate in the above reaction?
Answer» NONE of the above Solution :The formation of a MIXTURE of o-and m-toluidine SUGGESTS that TRIPLE BOND in benzyne is between o-and m-position.

30.	O+H_(2)NOH toA overset(H^(+))toB THe compound ‘B' is
Answer» SOLUTION :Beckmmn REARRANGEMENT

31.	o- fluorotoluene reacts with sodium amide to form-
Answer» <P>only o-TOLUIDINE only m-toluidine a MIXTURE of o- and p- toluidine a mixture of o- and m- toluidine Answer :D

32.	o- and p-Nitrophenols can be separated by_____.
Answer» SOLUTION :STEAM DISTILLATION

33.	O_(3) is prepared by subjecting 0, to silent electric discharge. The favourable conditions for the formation of ozone according to Le-chatlier's principle are
Answer» LOW TEMPERATURE, low pressure highe temperature, high pressure low pressure , high pressure high temperature, low pressure Answer :B

34.	O^(-2) or S ^(-2) formation is endothermic because
Answer» More STABILITY of `O^(-2) or S ^(-2)` More ENERGY ghain DUE to coupling Electrostatic REPULSION outweight the energy gain due to coupling (a,b) both are correct Answer :C

35.	O - 18 isotope of oxygen will have
Answer» 18 PROTONS 9 protons and 9 NEUTRONS 8 neutrons and 10 protons 10 neutrons and 8 protons Solution :`._(8)O^(18)` isotope of oxygen have 10 neutrons and 8 protons

36.	O
Answer» Which of the following CATALYST is used in preparation of HIGH density polythene ? PEROXIDE catalyst Ziegler - Natta catalyst Wilkinson's catalyst Solution :High density polythene is formed when addition polymerisation of ethene TAKES PLACE in a hydrocarbon solvent in presence of catalyst such as Ziegler-Natta catalyst.

37.	Nylons polyesters and cotton all possess strength due to :
Answer» INTERMOLECULAR H-bonding VANDER WAALS' attraction DIPOLE - dipole interaction None of the above Answer :A

38.	Nylon threads are made of
Answer» POLYETHYLENE POLYMER POLYVINYL polymer POLYESTER polymer Polyamide polymer Answer :D

39.	Nylons, polyesters and cotton all possess strength due to :
Answer» INTERMOLECULAR H-bonding VANDER WAALS' attraction DIPOLE - dipole interaction None of the above Answer :A

40.	Nylon salt is known as
Answer» tetramethylene diammonium ADIPATE dimethylene hexammonium adipate HEXAMETHYLENE diammonium adipate trimethylene diammonium adipate ANSWER :C

41.	Nylon thread contains the polymer
Answer» polyamide polyvinyl Polyester Polyethylene Answer :A::D

42.	Nylon polymers are
Answer» ACIDIC BASIC Amphoteir NEUTRAL ANSWER :C

43.	Nylon threads are made of :
Answer» Polythylene POLYMER POLYVINYL polymer POLYESTER polymer POLYAMIDE polymer ANSWER :D

44.	Nylon polymersare
Answer» ACIDIC BASIC amphoterlic NEUTRAL ANSWER :C

45.	Nylon is of which type fibre ?
Answer» POLYESTER POLYAMIDE POLYTHENE NONE of these Solution :Polyamide

46.	Nylon is not a
Answer» Condensation polymer polyamide Copolymer HOMOPOLYMER Solution :Nylon is the copolymer of HEXAMETHYLENE DIAMINE and adipic acid. It is not a homopolymer because homopolymer FORMED by two same monomer UNIT.

47.	Nylon is generic name for all synthetic fibre forming
Answer» polysters POLYMERIC AMIDES POLYSTYRENE Polythylene ANSWER :B

48.	Nylon is classified as a
Answer» POLYOLEFIN POLYAMIDE polyester POLYETHYLENE Answer :B

49.	Nylon 66, polyethylene, PVC, teflon.
Answer» SOLUTION :Nylon 66. It is a CONDENSATION polymer whereas others are ADDITION POLYMERS.

50.	Nylon is anexample of
Answer» polyamide polythene POLYESTER POLYSACCHARIDE ANSWER :A