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In the given image, X will be

a) R-CH=0 b) R-CH2NH2 c) R COOH d) R-NH2 Answer (a) Classical reduction ⎯⎯→ Aldehyde is formed.... View Article

Product X → Y will be

a) Ph − CH − Cl Ph− CH2− NC b) PhCH2OH Ph− CH2 − CN c) PhCH2 Cl... View Article

Match the following drugs with correct functional group test

A) Chloroxylenol P) Carbylamines B) Penicillin Q) Baeyer’s reagent C) Sulpha Pyridine R) FeCl3 test D) Norethindrone S) Sodium hydrogen... View Article

Maximum spin only magnetic moment for transition metal complex may be

a) 5.92 BM b) 6.92 BM c) 4.89 BM d) 3.87 BM Answer: (a) In Transition metal complex maximum number of unpaired electron possible is 5 and it... View Article

Aluminium exist in +3 stable whereas thallium exists in both +1 & +3 oxidation state. Reason for this is

a) Inert pair effect b) Lanthanoid contraction c) Diagonal relationship d) None of these Answer: (a) Due to inert pair effect thallium exist... View Article

Which of the following is a piezo electric material?

a) Silica) b) Quartz c) Mica d) Beryl Answer: (b) Piezoelectric → these are the material that produce electrical potential when... View Article

which of the following properties is or are true for a silicone polymer

A) Thermally resistant and have low dielectric constant B) Resistant towards oxidation and used in grease C) Biocompatible D) Hydrophobic in... View Article

Reversible isothermal expansion of gas for two temperature T₁ and T₂ (T₂ > T₁) Graph versus ([latex]left | w right |[/latex]) and ln v.

Answer: (2) w = - nRT ln (vf/vi) → constant is given same in all case. Take magnitude forW. ( ) = nRT lnvf – nRT Vi T2 > T1... View Article

Which of the following property in a group decrease down the group and increase down the group respectively.

a) electronegativity and atomic radius b) electronegativity and electro gain enthalpy c) atomic radius and electronegativity d) electro gain... View Article

Considering MOT comment on the stability:

a) Li2+ stable Li2−unstable b) Li2+ unstable Li2−unstable c) Li2+ unstable Li2− unstable d) Li2+ stable Li2– stable... View Article

Which of the following ore contains iron and copper

a) Malachite b) Azurite c) Copper pyrite d) None of these Answer: (c) Malachite – Copper ore CuCO3 Cu(OH)2 . Azurite – Copper... View Article

Which of the following alkaline earth metal nitrate does not crystalline with water of crystallization?

a) Ca(NO3)2 b) Mg(NO3)2 c) Sr(NO3)2 d) Ba(NO3)2 Answer: (d) •It depends on the polarization power of cation. • The atom which is... View Article

Which of the following is strongest acid

a) CHCl3 b) CHI3 c) CHBr3 d) CH (CN)3 Answer: (d) Order lies with –I and –M effect. -I and –M effect in CN is more when... View Article

Presence of which makes water unsuitable for drinking.

a) Fe = 0.2 ppm b) Cu = 2 ppm c) Mn = 0.5 ppm d) Zn = 0.05 ppm Answer: (c) Fact from NCERT Presence of Mn ≥ 0.05 ppm concentration makes... View Article

Arrange the following in order of K _a value

(P) FCH2COOH (Q) ClCH2COOH (R) O2NCH2COOH (S) NCCH2COOH a) P > Q > R > S b) R > S > P > Q c) R > P > S > Q d)... View Article

Product ‘x’ major will be

Answer: (c) It involves Electrophilic addition of alkenes, followed by Nucleophilic substitution mechanism.... View Article

Arrange the following in order of K_b value

a) P > Q > R b) Q > P > R c) R > P > Q d) R > Q > P Answer: (c) This nitrogen contains 3σ bond and its... View Article

Which of the following are isotope of hydrogen

a) Deutrium, Protium b) Deutrium, Tritium c) Deutrium, Tritium, Protium d) Protium Answer: (c) 1H1,1H2,1H3 Protium, Deutrium and Tritium... View Article

Given a mixture with 0.5 mole of gas A and X moles of gas B. Total pressure is 200 pa at 1000 k temperature in a vessel of volume 10m³. Then, find x. (R is universal gas constant).

a) (4-R)/2R b) (4+R)/2R c) (2-R)/2R d) 2/2 Answer: (a) Given: Mix – Gas A + Gas B Gas A = 0.5 mole and Gas B = x mole Total pressure... View Article

In hydrogen emission spectrum electron transition takes place from n = 8 to n = n_f. If we plot this graph of ῡ vs (1/nf² ). Which of the following statement is correct.

a) Slope = −RH b) Slope = RH c) Intercept = RH d) Graph is non-linear Answer: (b) Transition state = n = 8 to n = nf Graph (ῡ vs... View Article

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