Chemistry

The reaction that takes place when Cl₂ gas is passed through conc.NaOH solution is

Options

(a) oxidation (b) reduction (c) displacement (d) disproportionation

Correct Answer:

disproportionation

Explanation:

3Cl₂ + 6NaOH → 5NaCl + […]

Atoms in a P₄ molecule of white phosphorus are arranged regularly in the following way

Options

(a) at the corners of a cube (b) at the corners of an octahedron (c) at the […]

Which of the following is a tribasic acid

Options

(a) hypophosphorous acid (b) phosphorous acid (c) Orthophosphoric acid (d) pyrophosphoric acid

Correct Answer:

Orthophosphoric acid

Explanation:

No explanation available. Be the first to […]

When conc. H₂SO₄ is added to dry KNO₃, brown fumes are evolved. These fumes are of

Options

(a) SO₂ (b) SO₃ (c) NO (d) NO₂

Correct Answer:

NO₂

Explanation:

When heated with conc. H₂SO₄ […]

Which is difference between melting and boiling point of zero group elements

Options

(a) Melting point is higher than boiling point (b) Boiling point is higher than melting point (c) Both have same […]

H₂S₂O₇ has a commercial name as

Options

(a) oil of vitriol (b) hypo (c) oil of sulphur (d) oleum

Correct Answer:

oleum

Explanation:

No explanation available. Be the first to write the explanation […]

Which of the following about fluorine is not correct

Options

(a) The electron affinity of chlorine is greater than fluorine (b) The bond energy of fluorine is less than chlorine (c) Fluorine does […]

Which of the following is used in the preparation of chlorine

Options

(a) Only MnO₂ (b) Both MnO₂ and KMnO₄ (c) Only KMnO₄ (d) Either MnO₂ or KMnO₄

Correct Answer:

Both MnO₂ and […]

Chlorine is in +1 oxidation state in which of the following

Options

(a) HCl (b) Cl₂O (c) HClO₄ (d) Cl₂

Correct Answer:

Cl₂O

Explanation:

No explanation available. Be the first to write the […]