Zinc readily liberates hydrogen from cold dilute `H_(2)SO_(4)` but not from cold concentrated `H_(2)SO_(4)` Explain

Action of acetylene on dilute H_(2)SO_(4) gives

Why it is not advisable to dissolve KMnO_(4) in cold and concentrated H_(2)SO_(4)

Concentrated H_(2)SO_(4) can't act as a // an

On adding KMnO_(4) to cold conc. H_(2)SO_(4), it gives

In electrolysis of dilute H_(2)SO_(4) what is liberated at anode?

An inorganic Compound (A) has garnet red prismatic crystals. (A) is modertely soluble in water and dissolved in cold concentrated H_(2)SO_(4) to yield red crystal (B) . In presence of dilute H_(2)SO_(4) it converts a pungent gas (C ) into yellow turbidity (D) and converts a Suffocating gas (E) into a green solution (F). the gas (C ) and (E) also combine to produced the yellow turbidity (D) . With KI and starch in presence of dilute. H_(2)SO_(4) (A) and concentrated H_(2)SO_(4) Mixture used as a cleansing agent for glassware in the laboratory . identify (A) and explain the reactions.

For dilution of H_2SO_4 , why water should not be added to concentrated H_2SO_4 ?

H_(2)SO_(4) is manufactured by

Zinc sulphide reacts with dilute H_(2)SO_(4) to liberate which gas.

Assertion : CrO_(3) is an acid anhydride. Reason: CrO_(3) is obtained as bright orange crystals by the reaction of K_(2) Cr_(2) O_(7) with cold concentrated H_(2) SO_(4) .