Chemistry MCQS for Class 10
The solid particle deposit on the filter paper during filtratin is called.
Residue
All of them
Crystals
Precipitates
Major portion of ozone layer is foun in.
Stratosphere
Thermosphere
Troposphere
Mesosphere
99% of atmosphere consists of .
N2and O2
O2and CO2
N2and CO2
N2 and H2
A pollutant is a waste material that pollutes.
All of them
Soil
Air
Water
On which base atmosphere is divided into four regions?
Change in volume
Change in temperature
Change in rediation
Change in pressure
How many atmospheric temperature increase every year due to accumulation of CO2 in air.
0.03 oC
0.05 oC
2oC
1oC
Carbon monoxide is harmful to us because.
It damages lungs tissues.
It makes the blood coagulate.
It reduces oxygen carrying ability of haemoglobin
It paralyses the lungs.
Ozone is an allotropic form of
Sulphur
Oxygen
Carbon
Phosphorous
The range of temperature in burning solid waste burning in incinerators is.
650 oC – 1000 oC
650oC – 1000oC
5000oC – 1000oC
650oC – 11000oC
1000oC – 2000oC
The pH of water containing CO2 is
8-Jul
7-Jun
6-Apr
5.6-6
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