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Write down the uses of calcium oxide?

Important Questions on Compounds of Common Use

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Science>Chemistry>Compounds of Common Use>Lime
The conversion of hydroxyapatite occurs due to presence of F-ions in water. The correct formula of hydroxyapatite is:
HARD
Science>Chemistry>Compounds of Common Use>Lime
1 mol of a substance (X) was treated with an excess of water. 2 mol of readily combustible gas was produced along with solution which when reacted with CO2 gas produced a white turbidity. The substance (X) could be
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Science>Chemistry>Compounds of Common Use>Lime
Quick lime can only be used for drying
MEDIUM
Science>Chemistry>Compounds of Common Use>Lime
Gypsum on heating to 390 K gives.
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Science>Chemistry>Compounds of Common Use>Lime

During the preparation of hydrogen chloride gas on a humid day, the gas is usually passed through the guard tube containing calcium chloride. The role of calcium chloride taken in the guard tube is to

HARD
Science>Chemistry>Compounds of Common Use>Lime
An element combines with oxygen to form a compound of high melting point. This compound dissolves in water but does not dissolve in benzene. The element is possibly
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Science>Chemistry>Compounds of Common Use>Lime
 Quick lime is a :
MEDIUM
Science>Chemistry>Compounds of Common Use>Lime

Which of the following elements would yield an acidic oxide?

 Na, S, C, K, H

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Science>Chemistry>Compounds of Common Use>Lime
CaC2+N2 →A, product A is
MEDIUM
Science>Chemistry>Compounds of Common Use>Lime
Lime is used in metallurgical operations as a
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Science>Chemistry>Compounds of Common Use>Lime
Write the chemical reactions involved when
Calcium oxide reacts with HCl.
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Science>Chemistry>Compounds of Common Use>Lime
The colour of calcium oxide is
HARD
Science>Chemistry>Compounds of Common Use>Lime
Give three important uses of each of calcium and magnesium.
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Science>Chemistry>Compounds of Common Use>Lime
When a mixture of lime and silica is heated, calcium silicate is formed.
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Science>Chemistry>Compounds of Common Use>Lime
A solution of slaked lime is used for?
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Science>Chemistry>Compounds of Common Use>Lime

Use the information given below to identify the substances B and E, selecting your answer only from substances in the list given below. Write an equation for the chemical reaction mentioned. 

Calcium Calcium oxide Ammonium Chloride
Carbon Copper(II)oxide Copper(II)nitrate
Chlorine Lead(II)oxide Hydrogen chloride
Oxygen Calcium hydroxide Lead(II)oxide

B burns brightly in the air to form E.

HARD
Science>Chemistry>Compounds of Common Use>Lime
The drying agent which absorbs carbon dioxide and reacts violently with water is.
HARD
Science>Chemistry>Compounds of Common Use>Lime
1 mol of a substance (X) was treated with an excess of water. 2 mol of readily combustible gas were produced along with the solution, which when reacted with CO2 gas, produced white turbidity. The substance (X) could be
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Science>Chemistry>Compounds of Common Use>Lime
What is the chemical name of quick lime?
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Science>Chemistry>Compounds of Common Use>Lime
Which one of the following is present as an active ingredient in bleaching powder for bleaching action?