Science>Chemistry>Hydrogen>Redox reaction

EASY

Earn 100

What is meant by a reduction? Give one example of reaction in which substance undergoes reduction process.

Important Questions on Hydrogen

MEDIUM

Science>Chemistry>Hydrogen>Redox reaction

When hydrogen is passed over a black solid compound ‘ $A$ ’, the products are a colourless liquid and a reddish brown metal ‘ $B$ ’ The substance ‘ $B$ ’ is divided into two parts and each part is placed in separate test tubes. To one part of the substance ‘ $B$ ’ dil. $HCI$ is added and to the other part dil. ${HNO}_{3}$ is added.

What happens to substance ‘A’ when it reacts with hydrogen? Give reasons for your answer.

EASY

Science>Chemistry>Hydrogen>Redox reaction

The reaction that takes place in a chemical cell is best classified as

EASY

Science>Chemistry>Hydrogen>Redox reaction

On ignition when a substance combines with oxygen, the process is called:-

MEDIUM

Science>Chemistry>Hydrogen>Redox reaction

Write the reaction that is carried out when $Zn (II) oxide$ is reduced to $Zn$ using a reducing agent carbon.

MEDIUM

Science>Chemistry>Hydrogen>Redox reaction

Divide the following redox reaction into oxidation and reduction half reactions.

S n^{2 +} + 2 H g^{2 +} \to S n^{4 +} + H g_{2}^{2 +}

MEDIUM

Science>Chemistry>Hydrogen>Redox reaction

Which of the following reaction correctly represents a redox reaction?

MEDIUM

Science>Chemistry>Hydrogen>Redox reaction

When hydrogen is passed over a black solid compound ‘ $A$ ’, the products are a colourless liquid and a reddish brown metal ‘ $B$ ’ The substance ‘ $B$ ’ is divided into two parts and each part is placed in separate test tubes. To one part of the substance ‘ $B$ ’ dil. $HCI$ is added and to the other part dil. ${HNO}_{3}$ is added.

Name substances ‘ $A$ ’ and ‘ $B$ ’

EASY

Science>Chemistry>Hydrogen>Redox reaction

Hydrogen is used in the _____of metals.

MEDIUM

Science>Chemistry>Hydrogen>Redox reaction

Divide the following redox reaction into oxidation and reduction half reactions.

{C l}_{2} + 2 B r^{-} \to B r_{2} + 2 C l^{-}

EASY

Science>Chemistry>Hydrogen>Redox reaction

In the reaction

2 Mg + {CO}_{2} \to 2 MgO + C

, carbon dioxide undergoes ______.

MEDIUM

Science>Chemistry>Hydrogen>Redox reaction

Divide the following redox reaction into oxidation and reduction half reactions.

Z n + {C u}^{2 +} \to Z n^{+} + C u

MEDIUM

Science>Chemistry>Hydrogen>Redox reaction

Divide the following redox reaction into oxidation and reduction half-reactions.

2 C u^{+} \to C u + C u^{2 +}

MEDIUM

Science>Chemistry>Hydrogen>Redox reaction

A redox reaction is one in which _____.

MEDIUM

Science>Chemistry>Hydrogen>Redox reaction

What is redox reaction?

MEDIUM

Science>Chemistry>Hydrogen>Redox reaction

The electrolysis of acidified water is an example of

EASY

Science>Chemistry>Hydrogen>Redox reaction

A reaction in which oxidation and reduction take place simultaneously is known as:

EASY

Science>Chemistry>Hydrogen>Redox reaction

A process in which the addition of hydrogen or any other electropositive radical takes place is called _____ reaction.

EASY

Science>Chemistry>Hydrogen>Redox reaction

In the reaction

2 Mg + {CO}_{2} \to 2 MgO + C

, carbon dioxide undergoes _____ process.

EASY

Science>Chemistry>Hydrogen>Redox reaction

Sulphuric acid(dilute) oxidises hydrogen sulphide to :

MEDIUM

Science>Chemistry>Hydrogen>Redox reaction

Divide the following redox reaction into oxidation and reduction half-reactions.

Z n + P b^{2 +} \to Z n^{2 +} + P b