CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Uses of Alkali Metals

A substance ‘...

Question

A substance ‘X’ is used in white-washing and is obtained by heating limestone in the absence of air. Identify ‘X’.

A

CaOCl2

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

CaSO4

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

CaO

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

D

CaCO3

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C

CaO

The chemical substance X used for whitewashing is Calcium oxide, also known as quicklime or burnt lime or lime.

Calcium oxide is an alkaline earth flux with the chemical formula CaO.

Suggest Corrections

thumbs-up

0

Similar questions

Q. Coal tar is obtained by heating coal in the absence of air.

Q. Identify the correct statement from the following.
(a) On commercial scale,

C O_{2}

is obtained by heating limestone.
(b) Graphite is used as a dry lubricant.
(c)

S i O_{2}

H F

but does not react with

N a O H

[G e C l_{6}]^{2 -}

, the hybridisation of central atom is

s p^{3} d^{2}

.

Q. A substance is heated in the absence of air and this results in the decomposition of the substance bearing a carbon –rich residue. This process is known as ___________.

Q. Question 1.1
A solution of a substance ‘X’ is used for white washing.
(i) Name the substance ‘X’ and write its formula.

Q. What are the products obtained by heating ethane in:
(a) excess of air
(b) absence of air
(c) air in presence of copper and 120 atm pressure.
(d) air with molybdenum oxide at 100 atm pressure.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Uses of Alkali Metals

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Uses of Alkali Metals

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon