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.	Metal is precipitated from Au(CN)_(4)^(3-) using zinc as a precipitant. Along with Au, a complex compound of zinc is also formed as product. The 1^@ and 2^@ valencies in the complex are
Answer» `2,3` `2,6` `1,4` `2,4` ANSWER :D

2.	Metal hydroxide is added as an ........... for making noble metal sols.
Answer» SOLUTION :STABILISING AGENT

3.	Metal extracted from molten cryolite is
Answer» Al Fe Zn Ag Answer :A

4.	Metal excess defect is possible in …………………………………
Answer» `AgCl` `AGBR` `KCI` `FES` ANSWER :C

5.	Metal ion responsible for the Minamata disease is
Answer» `Co^(2+)` `Hg^(2+)` `CU^(2+)` `Zn^(2+)` Answer :B

6.	Metal hydrides are ionic covalent or molecularin nature amongLiH ,NaH,KH ,RbH,CsHthe correct orderof increasingionic character is
Answer» `LiHltNaHgtCsHgtKHgtRbH` `LiHltNaHltKHltRbHltCsH` `RbHgtCsHgtNaHgtKHgtLiH` `NaHgtCsHgtRbHgtLiHKH` ANSWER :B

7.	Metal deficiency defects is observed in
Answer» NIO FeS FeO All of these ANSWER :D

8.	Metal halide X,Y respectively
Answer» `I_(2),I^(-)` `I^(-) , I_(2)` `I_(2),KI_(3)` `Br_(2),KBr_(3)` SOLUTION :`underset("(X)") ( 4KI) + 2CuSO_(4) rarr underset("BROWN ppt. (Y)")(Cu_(2)I_(2)+I_(2)+2K_(2)SO_(4))` `underset("(Y)")(I_(2))+underset("Hypo")(2Na_(2)S_(2)O_(3)) rarrunderset("Colourless")(2NaI + Na_(2)S_(4)O_(6))`

9.	Metal halide which is insoluble in water is
Answer» AgI `CaCl_(2)` `AgF` `KBr` ANSWER :A

10.	Metal chloride contains 71% chlorine. Then calculate equivanlent weight of that metal bromide (at. Wt. of Br = 80)
Answer» `14.5` 85 `94.5` 100 Answer :C

11.	Metal generally present in polluted air is
Answer» CADMIUM Lead Mercury Zinc Answer :B

12.	Metal commonly present in bronze, brass and German silver is
Answer» Cu Ag ZN Fe Answer :A

13.	Metal carbonate is converted to the corresponding metal oxide usually by :
Answer» ROASTING PROCESS calcination process reduction process OXIDATION process Answer :B

14.	Metal among the following is:
Answer» As Sb P Bi Answer :D

15.	Metal always found in free state is
Answer» GOLD silver copper sodium Answer :A

16.	Metal alloy crystal consisting eight coordination number is obtained during crystallization of Li and Ag^(+), then which type of crystal arrangement will observed ?
Answer» bcc SIMPLE CUBE HEXAGONAL (A), (B) and (C) all three ANSWER :A

17.	Metal A,B and C has reduction potentials, 0.34 volt, -0.80 volt and -0.46 volt respectively. So give order of their capacity as reducing agent.
Answer» `C gt A gt B` `AgtBgtC` `BgtCgtA` `CgtBgtA` Solution : So, order of reducing agent is : `B gt C gt A` Metal with less reduction POTENTIAL `(E_(RED)^(@))` will liberate electrons and easily get OXIDIZED. Hence, it is strongest reducing agent.

18.	Metal always found in free state is :
Answer» Gold Aluminium Copper Sodium ANSWER :A

19.	Metal alkoxides contain:
Answer» Metal-carbon bond Metal-carbon bond Metal-methyl bond None Answer :B

20.	Metaformaldehyde is called bakelite.
Answer» SOLUTION :trioxane

21.	Metaformaldehyde is called bakelite. True / False
Answer» SOLUTION :trioxane

22.	Metabolic function in human bodies is carried out by
Answer» Lipids Peptides Nucleic acids ENZYMES Solution :Enzymes are specific BIOLOGICAL catalysts that possess WELL defined ACTIVE SITES.

23.	Metabolism of C_6H_5COONa finally excreated as
Answer» Benzene Hippuric acid BHT BHA ANSWER :B

24.	Meta phosphoric acid is chemically
Answer» <P>`H_(3)PO_(4)` `HPO_(3)` `H_(4)P_(2)O_(6)` `H_(3)PO_(2)` Answer :2

25.	Meta-directing and deactivating group in aromatic electrophilic substitution is :
Answer» `-CH_3` `-OH` `-NO_2` `-CL` ANSWER :C

26.	Mesotartaric acid is optically inactive. This is because of :
Answer» ABSENCE of chirality racemisation of d and L optical FORMS EXTERNAL compensation internal compensation Answer :D

27.	Meson was discovered by :
Answer» Chadwick Yukawa Powell Stassman and Hahn. Answer :B

28.	Mesomeric effect involves delocalisation of
Answer» PROTONS SIGMA electrons pi electrons NONE of these Solution :The mesomeric effect refers to the polarity produced in a molecules as a RESULT of interaction between two `pi` bonds or a `pi` - bond and a lone pair of electrons.

29.	Mesodibromobutane on debromination gives
Answer» Trans-2-butene Cis-2-butene 1-butene 1-butyne Solution :SYMMETRICAL OPTICAL ISOMERS are CALLED as MESOMERS. .

30.	Meso tartaric acid is optically inactive due to the presence of:
Answer» MOLECULAR symmetry Molecular asymmetry External compensation Two ASYMMETRIC CARBON atoms Answer :A

31.	Mesomeric effect involves :
Answer» DELOCALISATION of `PI`-electrons delocalisation of `SIGMA`-electrons partial DISPLACEMENT of electrons delocalisation of `pi and sigma`-electrons Answer :A

32.	Meso-tartaric acid is optically inactive due to the presence of
Answer» MOLECULAR SYMMETRY Molecular asymmetry External compensation Two asymmetric C-atoms Solution :Molecular symmetry Mesotartaric acid is opticallly inactive due to internal compensation i.e. the effect ONE half of the molecule is neutralized by other.

33.	Meso tartaric acid and d-tartaric acid are:
Answer» POSITION ISOMERS RACEMIC MIXTURE ENANTIOMERS diastereomers Answer :D

34.	Meso Tartaric acid
Answer» RIBOSE ARABINOSE MANNOSE Talose Answer :A

35.	Meso compounds do not show optical activity because ?
Answer» they CONTAIN PLANE of symmetry they do not contain chiral carbon atoms they do not contain plane of symmetry they have non-superimposable MIRROR IMAGES Answer :A

36.	meso-2,3-Dibromobutane is treated with NaI in acetone. The mojor compound formed is
Answer» cis-but`-2`-ne `2-`BROMO`-3-`iodobutane trans-but`-2-`ene meso`-2,3-`diiodobutane Solution :DEHALOGENATION by sodium IODIDE proceeds by an `E2` ELIMINATION mechanism. `E2` elimination, which is both stereoselective and stereospecific, TYPICALLY involves antielimination.

37.	Mesityl oxide is formed by the condensation of
Answer» ACETALDEHYDE ACETONE propanal FORMALDEHYDE ANSWER :B

38.	Mesityl oxide is
Answer» KETONE aldehyde ester ethers ANSWER :A

39.	Meso compounds do not show optica activity because :
Answer» they do not contain chiral carbon ATOMS they have non-superimposable MIRROR images. they contain PLANE of symmetry they do not contain plane of symmetry. Answer :C

40.	Mercury tree can be prepared :
Answer» By MIXING up mercuric thicyanate and gum By adding Nessler.s REAGENT to a ammonium salt solution By pouring little mercury into `AgNO_3` solution By heating mercuric CHLORIDE Answer :C

41.	Mercury on heating with aqua - regia yields :
Answer» `HG(NO_3)_2` `HgCl_2` `Hg(NO_2)_2` `Hg_2Cl_2` ANSWER :B

42.	Mercury sticks to glass when it comes in contact with
Answer» `H_(2)O` `HNO_(3)` `I_(2)` `O_(3)` ANSWER :D

43.	Mercury sol is obtained by subjecting it to sound waves of frequency more than ............
Answer» 20 HZ 20 KHZ 200 kHz 2000 kHz Solution : 20 kHz

44.	Mercury on heating with aqua-regia gives:
Answer» `Hg(NO_(3))_(2)` `HgCl_(2)` `Hg(NO_(2))_(2)` `Hg_(2)Cl_(2)` ANSWER :B

45.	Mercury is transported in the containers made of :
Answer» Ag Pb Al Fe Answer :D

46.	Mercury meniscus is regained by addition of:
Answer» `H_2O` `H_2O_2` ALCOHOL `CCl_4` ANSWER :B

47.	Mercury is transported in metal containers made up of :
Answer» Fe Pb Zn Sn Answer :A

48.	Mercury is transpored in metal containers made of :
Answer» Silver Lead IRON `ALUMIUM ANSWER :C

49.	Mercury is the only metal which is liquid at 0^(@)C. This is due to its:
Answer» Very high ionisation ENERGY and weak METALLIC bond Low ionisation potential High ATOMIC weight High VAPOUR pressure Answer :A

50.	Mercury is the one metal which is liquid at room temperature. This is due to its
Answer» very HIGH IONIZATION ENERGY and weak metallic bond low ionization potential high atomic weight high vapour pressure Solution :Due to high ionization energy and weak metallic BONDING, mercury is a liquid at room TEMPERATURE.