Science (English Medium) Class 11 - CBSE Question Bank Solutions for Chemistry

What is hybridization state of each carbon atom in the following compound?

C₆H₆

Indicate the σ and π bonds in the following molecules:

 CH₂ = C = CH₂

Indicate the σ and π bonds in the following molecules:

CH₃NO₂

Indicate the σ and π bonds in the following molecule:

HCONHCH₃

In the organic compound CH₂ = CH – CH₂ – CH₂ – C ≡ CH, the pair of hybridized orbitals involved in the formation of: C₂ – C₃ bond is ______.

Write the formulae for the following compound:

Mercury(II) chloride

What are the common physical features of alkali metals?

What is hybridization state of each carbon atom in the following compound?

CH₂ = C = O

What is hybridization state of each carbon atom in the following compound?

CH₃CH = CH₂

What is hybridization state of each carbon atom in the following compound?

(CH₃)₂CO

What is hybridization state of each carbon atom in the following compound?

CH₂ = CHCN

Consider the isoelectronic species, \[\ce{Na+, Mg^{2+}, F–}\] and \[\ce{O2-}\]. The correct order of increasing length of their radii is ______.

Choose the correct order of atomic radii of fluorine and neon (in pm) out of the options given below and justify your answer.

What do you understand by exothermic reaction and endothermic reaction? Give one example of each type.

Match the items given in Column I with examples given in Column II.

Assertion (A): Sodium chloride formed by the action of chlorine gas on sodium metal is a stable compound.

Reason (R): This is because sodium and chloride ions acquire octet in sodium chloride formation.

Which of the following statements is correct?

In an adiabatic process, no transfer of heat takes place between system and surroundings. Choose the correct option for free expansion of an ideal gas under adiabatic condition from the following.

In an exothermic reaction, heat is evolved, and system loses heat to the surrounding. For such system:

(i) q_p will be negative

(ii) ∆_rH will be negative

(iii) q_p will be positive

(iv) ∆_rH will be positive

Heat has randomising influence on a system and temperature is the measure of average chaotic motion of particles in the system. Write the mathematical relation which relates these three parameters.