Chemistry MCQS with Answers Set 5

If a salt bridge is removed between the two half cells the voltage

Drops to zero

Increases gradually

Increases rapidly

Does not change

Which of the following fluorides of xenon in impossible?

XeF₂

XeF₃

XeF₆

XeF₄

On heating acetaldehyde with ammonical silver nitrate solution we get

CH₃OH

HCHO

Silver acetate

Silver mirror

In a reversible chemical reaction having two reactants in equilibrium if the concentration of the reactants are doubled then the equilibrium constant will

Be halved

Remains the same

Also be doubled

Becomes one fourth

Which of the following species participate in sulphonation of benzene ring?

HSO^–₃

SO^–₂

SO₃

H₂SO₄

The rate of reaction between A and B increases by a factor of 100 when the concentration with respect to A is increased 10 folds the order of reaction w.r.t A is

10

4

2

1

Which is the most volatile compound?

HCI

HF

HI

HBr

Toluene can be oxidized to benzonic acid by

None

K₂Cr₂O₇ (acidic)

KMnO4 (alk)

Both

The vapour density of a gas is 11.2 The volume occupied by 11.2 g of this gas at N.T.P is

11.2 liters

1 liter

22.4 liters

2.24 liters

Tollen’s reagent is

Ammonical silver bromide

Ammonical silver nitrate

Ammonical cuprous chloride

Ammonical cuprous oxide