Hybridization present in ClF₃ is :

• sp²

• sp³

• dsp²

• sp³d

Number of electrons surrounding Kr in KrF₂ is :

• 10

• 6

• 4

• 8

H - I - O bond angle in H₂O₂ :

• 90^o

• 180^o

• 109.5^o

• 94.8^o

4.

Which has smallest size ?

• Na⁺

• Mg²⁺

• Ne

• O^2-

Electron deficient molecule is :

• CCl₄

• PCl₅

• BF₃

• SF₆

Which is the correct relation for diffusion of gases :

• r $\propto$ d

• r $\propto$ $\sqrt{\mathrm{d}}$

• r $\propto$ $\frac{1}{\sqrt{\mathrm{d}}}$

• none of these

Hydrolysis of sodium acetate gives :

• acidic solution

• basic solution

• amphoteric solution

• neutral solution

Isotopic pair is :

• ₂₀X⁴⁰ , ₂₁X⁴⁰

• ₂₀X⁴⁰ _{, 20}X⁴¹

• ₄₀X²⁰ , ₄₁X²⁰

• None

Atomic number of an element is equal to the number of :

• protons

• neutrons

• electrons

• protons + neutrons

Cationic hydrolysis gives the following solution :

• acidic

• basic

• neutral

• amphoteric