MAH-MHT CET (PCM/PCB) entrance exam Question Bank Solutions for Chemistry

Which element among the following does form pπ - pπ multiple bonds?

The correct statement with regard to \[\ce{H^+_2}\] and \[\ce{H^-_2}\] is:

Which element among the following does not form diatomic molecules?

Identify the group that exerts electron withdrawing resonance effect.

Identify the functional group that has an electron-donating inductive effect.

Arrange the following free radicals in order of decreasing stability.

1. Methyl
2. Vinyl
3. Allyl
4. Benzyl

Which pair of bases is present both in DNA and RNA?

Energy required to dissociate 6 g of gaseous hydrogen into free gaseous atoms is 208 kcal at 25°C. Bond energy of H-H bond will be ____________.

The CORRECT order of C-X bond polarity is ____________.

In gas phase H-O-O-H bond angle in H₂O₂ is ______.

What is the value of C-O-H bond angle in CH₃^_OH?

Which among the following is a biodegradable polymer?

Which of following bonds has maximum bond length?

What is the H-S-H bond angle in H₂S?

A mixture of ____________ is filled in electric bulb to increase life of filament.

The hybridization and bond angle in BeCl₂ molecule are ____________ respectively.

Purine derivative among the following bases is ____________.

Consider the reactions.

\[\ce{C_{(s)} + 2H2_{(g)} -> CH4_{(g)}}\], ΔH = −x kcal

\[\ce{C_{(g)} + 4H_{(g)} -> CH4_{(g)}}\], ΔH = −x₁ kcal

\[\ce{CH4_{(g)} -> CH3_{(g)} + H_{(g)}}\], ΔH = +y kcal

The average C-H bond enthalpy is:

Which mixture is used for respiration by deep sea divers?

Which of the following pairs have identical bond order?