EASY
Earn 100

Which of the following is used to dry carbon dioxide gas?

50% studentsanswered this correctly

Important Questions on Water

EASY
Science>Chemistry>Water>Drying and Dehydrating Agents
Give one example: Hygroscopic solid substance
MEDIUM
Science>Chemistry>Water>Drying and Dehydrating Agents
What are desiccating agents or drying agents. Give some examples of it.
HARD
Science>Chemistry>Water>Drying and Dehydrating Agents
What do you observe when crystals of copper sulphate are heated?
EASY
Science>Chemistry>Water>Drying and Dehydrating Agents

Give the name and formula of two substances for the following.

Liquid drying agent.

MEDIUM
Science>Chemistry>Water>Drying and Dehydrating Agents
Define dehydrating agent?
EASY
Science>Chemistry>Water>Drying and Dehydrating Agents

Which of the following is drying agent?

MEDIUM
Science>Chemistry>Water>Drying and Dehydrating Agents
What are drying or desiccating agents? Give examples.
MEDIUM
Science>Chemistry>Water>Drying and Dehydrating Agents
Explain why fused CaCl2 or concentrated H2SO4 is used in a desiccator.
MEDIUM
Science>Chemistry>Water>Drying and Dehydrating Agents
Define desiccator?
MEDIUM
Science>Chemistry>Water>Drying and Dehydrating Agents
Name a blue crystalline salt which on heating changes to white.
MEDIUM
Science>Chemistry>Water>Drying and Dehydrating Agents

Give the name and formula of two substances for the following.

A basic drying agent.

MEDIUM
Science>Chemistry>Water>Drying and Dehydrating Agents

Distinguish between drying agent and dehydrating agent. 

EASY
Science>Chemistry>Water>Drying and Dehydrating Agents

Hot aluminium oxide (Al2O3) is a

EASY
Science>Chemistry>Water>Drying and Dehydrating Agents

State the term: The substance that can remove hydrogen and oxygen atoms in the ratio of 2:1(in the form of water) from the compounds. (Catalyst/ Dehydrating agent/ Reagent)

MEDIUM
Science>Chemistry>Water>Drying and Dehydrating Agents
Define Hygroscopy.
MEDIUM
Science>Chemistry>Water>Drying and Dehydrating Agents

Take some sugar in a watch glass and add a few drops of concentrated sulphuric acid. Observe the changes. Which is the black substance in the product formed?

EASY
Science>Chemistry>Water>Drying and Dehydrating Agents
Cotyledons are also called-
MEDIUM
Science>Chemistry>Water>Drying and Dehydrating Agents
What are drying agents or desiccating agents? Why is anhydrous calcium chloride used as a desiccator?
EASY
Science>Chemistry>Water>Drying and Dehydrating Agents
Anhydrous calcium chloride is used as a desiccator. Why?
EASY
Science>Chemistry>Water>Drying and Dehydrating Agents
A phenomenon where a compound absorbs moisture from the atmosphere when it is exposed to it but not enough to form a solution. (Efflorescence / Hygroscopy)