Which is most basic in character ?

• CsOH

• KOH

• NaOH

• LiOH

The mass of BaCO₃ produced when excess CO₂ is bubbled through a solution of 0.205 mole Ba(OH) is :

• 81 gm

• 40.5 gm

• 20.25 gm

• 162 gm

Would gaseous HCl be considered as an Arrhenius acid ?

• Yes

• No

• Not known

• Gaseous HCl does not exist

The degree of hydrolysis in hydrolytic equilibrium

A^- + H₂O $\rightleftharpoons$ HZ + OH^-

at salt concentration of 0.001 M is :

(K_a = 1 × 10^-5)

• 1 × 10^-3

• 1 × 10^-4

• 5 × 10^-4

• 1 × 10^-6

5.

No two electron can have the same values of ........ quantum numbers.

• one

• two

• three

• four

A compound contains 54.55% carbon, 9.09% hydrogen, 36.36% oxygen. The empirical formula of this compound is:

• C₃H₅O

• C₄H₈O₂

• C₂H₄O₂

• C₂H₄O

pH of 1M NH₃ aqueous solution is (K_b = 1.8 × 10^-5)

• 11.13

• 12.5

• 13.42

• 11.55

Equivalent weight of an acid :

• depends on the reaction involved

• depends upon the number of oxygen atoms present

• is always constant

• None of the above

The compound in which cation is isoelectronic with anion is :

• NaCl

• CsF

• NaI

• K₂S

The paramagnetic molecule at ground state among the following is :

• H₂

• O₂

• N₂

• CO