Chemistry

n-Butane and isobutane are

Options

(a) positional isomers (b) chain isomers (c) functional isomers (d) metamers

Correct Answer:

chain isomers

Explanation:

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The isomerism represented by ethyl acetoacetate is

Options

(a) keto-enol isomerism (b) geometrical isomerism (c) enantiomerism (d) diastereoisomerism

Correct Answer:

keto-enol isomerism

Explanation:

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Dumas method is used for the estimation of

Options

(a) carbon (b) halogens (c) sulphur (d) nitrogen

Correct Answer:

nitrogen

Explanation:

It is the method of estimating nitrogen by heating a known mass […]

The compound that does not produce blue colour in Lassaigne’s test is

Options

(a) Urea (b) Hydrazine (c) Aniline (d) Glycine

Correct Answer:

Hydrazine

Explanation:

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A hydrocarbon contains 20% hydrogen and 80% carbon.The empirical formula is

Options

(a) CH₄ (b) CH₃ (c) CH₂ (d) CH

Correct Answer:

CH₃

Explanation:

Atomic ratio of 20% Hydrogen = 20 / 1 = […]

The hybridisation of C₂H₂ is

Options

(a) sp³ (b) sp (c) sp³d (d) sp²

Correct Answer:

sp

Explanation:

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Which of the following C-H bonds has lowest bond dissociation energy

Options

(a) tertiary(3⁰) C-H bond (b) primary(1⁰) C-H bond (c) secondary(2⁰) C-H bond (d) all of these

Correct Answer:

tertiary(3⁰) C-H bond

[…]

The number of isomers in C₄H₁₀O is

Options

(a) 5 (b) 3 (c) 7 (d) 4

Correct Answer:

7

Explanation:

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