Chemical Weathering

Q. The process of water mixing with the atmospheric carbon-dioxide to form carbonic acid is called _________.

1. Carbonisation
2. None of these
3. Carbonation
4. Carbonification

Q.

What is the difference between corrosion and oxidation?

Q.

The chemical reactions involved in the rusting of iron are:

1. Oxidation and displacement

2. Reduction and combination

3. Oxidation and combination

4. Reduction and displacement

Q. Which of the following region(s) has/have predominantly higher amount of chemical weathering?

1. Polar region
2. Equatorial region
3. Temperate region
4. Sub-tropical region

Q. Leaching occurs in which type of chemical weathering?

1. Solution
2. Carbonation
3. Exfoliation
4. Alkaline crystallisation

Q. Rust is formed due to ______ reaction.

1. reduction
2. distillation
3. fracking
4. oxidation

Q. Consider the following statements.

A - Iron + Moisture + Oxygen = Iron Oxide.

B - The rust that develops in rocks with iron content cannot be removed, thereby, keeping the original structure of the rock intact.

Identify the correct statements.

1. B only
2. Both A & B
3. Neither A nor B
4. A only

Q. The process of water mixing with the atmospheric carbon dioxide to form carbonic acid is called _________.

1. carbonation
2. carbonification
3. oxidation
4. carbonisation

Q.

Iron nails are taken in three test tubes-$\mathrm{A}$ having anhydrous ${\mathrm{CaCl}}_2$, $\mathrm{B}$ having boiled water, and a layer of oil and $\mathrm{C}$ having water. Nails in which test tube will undergo corrosion? Give reason.

Q. Which of these weathering processes are considered as chemical weathering?

1. Oxidation
2. Carbonation
3. Solution
4. Exfoliation

Q. Which of the following is true about the process of oxidation?

1. Freezing and melting of water in rock cracks cause disintegration.
2. Oxygen reacts with iron present in rocks to loosen the original structure of the rock.
3. Water dissolves the calcium carbonate present in rocks.
4. Water affects iron present in rocks to cause rust.

Q.

Fatty foods become rancid because of which one of the following?

1. Oxidation

2. Reduction

3. Hydrogenation

4. Corrosion

Q. I am a process that occurs on rocks because of the presence of iron in them. I result in the formation of rust that gets removed from the rocks easily. As a result, the rust loosens the original structure of the rock making it weak and the rock gets broken.

Who am I?

1. Carbonation
2. Oxidation
3. Solifucation
4. Slumping

Q.

Which one of the following is an example of physical weathering?

1. Oxidation

2. Frost action

3. Hydration

4. Solution

Q. Leaching occurs in which of the following type(s) of chemical weathering?

1. Solution
2. Carbonation
3. Hydration
4. All of these

Q. Consider the following statements.

A - Carbonation is the mixing of water with the atmospheric carbon-monoxide.

B - Carbonation results in the formation of carboxylic acid.

Identify the correct statements.

1. A only
2. B only
3. Both A & B
4. Neither A nor B

Q. is the mixing of water with the atmospheric carbon dioxide to form carbonic acid.

1. Carbonisation
2. Oxidation
3. Carbonation

Q. Rust is formed due to ______.

1. reduction
2. distillation
3. fracking
4. oxidation

Q. Which of the following is formed as a result of atmospheric carbon-dioxide getting mixed with the rainwater?

1. Nitric acid
2. Sulfuric acid
3. Oxalic acid
4. Carbonic acid

Q. Which of the following phenomenon occurs in rusting?

1. Carbonisation
2. Reduction
3. Redox reaction
4. Oxidation

Q.

Iron compounds in rocks start crumbling through the process of

1. Oxidation

2. Carbonation

3. Solution

Q. When we think of rust, the first image is that of a metallic object covered with the reddish-brown colour. However, rust is also possible on rocks. How can we explain this phenomenon?

1. The water is absorbed by minerals present in rocks that leads to expansion and contraction.
2. The carbonation leads to carbonic acid slowly disintegrating rocks.
3. Rusting is caused due to oxidation of iron present within rocks.
4. The rusting of rocks compromises its internal structure.

Q. Which chemical process is being described below?

Iron+Oxygen+Moisture = Iron Oxide

1. Oxidation
2. Reduction
3. Hydration
4. Carbonisation

Q. Hydration is a physical process wherein the minerals swell up and cause cracks to form in the rocks, eventually causing weathering.

1. True
2. False

Q. is the mixing of water with the atmospheric carbon dioxide to form carbonic acid.

1. Carbonisation
2. Oxidation
3. Carbonation

Q.

Rust is ______

Q. During rusting colour of iron changes from silvery white to brown which characteristic of chemical reaction

Q. rusting of iron is which kind of reaction