The normality of 0.2M H₃PO₂ is

• 0.2 N

• 0.4 N

• 0.6 N

• 0.06 N

Heat of neutralization of HCl and NaOH is

• -13.7 kcal

• -13.7 J

• -13.7 kJ

• None of these

NO${}_3^{-}$ is detected by ring test. Ring formed has formula

• FeSO₄.HNO₂

• FeSO₄.NO₂

• [Fe(H₂O)₅.NO]²⁺

• Fe(OH)₂.NO

The process of oxidation involve

• loss of electron

• gain of electron

• loss of proton

• loss of neutron

The molarity of pure water is

• 18

• 5.56

• 55.6

• 100

The attacking agent in the electrophilic sulphonation of benzene is

• SO${}_4^{2-}$

• SO${}_3^{2-}$

• SO₂

• SO₃

The IUPAC name of the following compound

CH₃ - CH = CH - C ≡ CH is

• pent-2-en-4-yne

• pent-1-en-4-yne

• pent-3-en-1-yne

• pent-2-en-5-yne

The number of electrons transferred when KMnO₄ acts as an oxidising agent to give MnO₂ and Mn²⁺ respectively are

• 2, 3

• 1, 5

• 3, 5

• 1, 3

Benzene has the following hybridisation

• sp

• sp²

• sp³

• dsp²

20.

Propyne and propene can be distinguished by

• conc. H₂SO₄

• Br₂ in CCl₄

• dil. H₂SO₄

• AgNO₃ in ammonia