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Alkane is obtained from which of the following Grignard reagent?

(A) NH3 (B) HOH (C) C2H5OH (D) All Of These The Correct Answer is (D) All Of These Solution: Yes.... View Article

What is the total number of black coloured sulphides among Ag2S, Bi2S3, CoS, CuS, HgS, MnS, NiS, PbS, and SnS2.

(A) Two (B) Four (C) Six (D) Eight The Correct Answer is (C) Six Solution: The total number of black... View Article

Iodine(I2) reacts with Concentrated Nitric acid(HNO3)to give:

(A) HI (B) HOIO2 (C) HOIO3 (D) All Of These The Correct Answer is (B) HOIO2 Solution: When Iodine(I2) is... View Article

What is the order of rate of reaction of the following compound with phenyl magnesium bromide?

(A) I > II > III (B) II > III > I (C) III > II > I (D)... View Article

The compounds C2H5OC2H5 and CH3OCH2CH2CH3 are:

(A) Metamers. (B) Chain isomers. (C) Geometrical isomers. (D) Conformational isomerism. The Correct Answer is (A) Metamers. Solution: The compounds... View Article

The thermal decomposition of Acetaldehyde (CH3CHO) occurs as : CH3CHO → CH4 + CO. The kinetic data of the thermal decomposition is given below. The rate expression thus can be given as:

The kinetic data of the thermal decomposition. (CH3CHO)mol.lit-1 Rate(mol.lit-1.sec-1) 1.75 * 10-3 2.06 * 10-11 3.5 * 10-3 8.24*10-11 7.0... View Article

In which of the following compounds, all the atoms are in one plane in all the possible conformations.

The Correct Answer is Both (B) and (C) Solution: As given in the above options: (A) All the atoms may... View Article

Which of the following is the correct structure of 4-bromo-3-methyl but-1-ene?

(A) \(\begin{array}{l}Br-CH = C(CH_{3})_{2}\end{array} \) (B) \(\begin{array}{l}CH_{3}- C(CH_{3}) = CHCH_{2}-Br\end{array} \) (C) \(\begin{array}{l}CH_{2} = CH-CH(CH_{3})-CH_{2}Br\end{array} \) (D) \(\begin{array}{l}CH_{2} = C(CH_{3})CH_{2}CH_{2}Br\end{array}... View Article

Which of the following order is true about the boiling points of HF, HCl, HBr and HI?

(A) HCl > HF > HBr > Hl (B) HF > HCl > HBr > Hl (C) HI > HBr... View Article

Which of these molecules have non-bonding electron pairs on the central atom?

(A) SF4 (B) SO2 (C) ICL3 (D) All Of These The Correct Answer is (D) All Of These Solution: All... View Article

SN2 Reactions are

(A) Stereospecific (B) Stereoselective (C) Both (A) and (B) (D) None Of These The Correct Answer is (A) Stereospecific Solution:... View Article

Conversion of Chlorobenzene to 1-Chloro-4-methylbenzene is

(A) Wurtz reaction (B) Swarts reaction (C) Wurtz-Fittig reaction (D) Friedel-Crafts reaction The Correct Answer is (D) Friedel-Crafts Alkylation Solution:... View Article

Integral x/(x⁴+x² + 1) dx

Solution: \(\begin{array}{l}\int \frac{x}{x^{4}+x^{2}+1}dx=\end{array} \) Put x2 = t Then 2x dx = dt ∫x/(x4+x2 + 1) dx = ½ ∫dt/[(t+½... View Article

The value of α for which the equation (α+5)x² – (2α+1)x + (α-1) = 0 has roots equal in magnitude but opposite in sign, is

(a) 7/4 (b) 1 (c) -½ (d) -5 Solution: Given (α+5)x2 – (2α+1)x + (α-1) = 0 has roots equal... View Article

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