A. LimestoneB. Silica ClayC. GypsumD. Ash
Tag: Chemistry MCQs
Nylon is prepared from
A. Adipic acid and hexametheylene diamineB. Ethylene glycol and nitric acidC. Hexametheylene diamine and phthalic acidD. Ethylene clycol and adipic acid
Phosphorus is mainly extracted from
A. SandB. AshC. Bone ashD. Fertiliser
The oil used in the froth floatation process is
A. Coconut oilB. Olive oilC. KeroseneD. Pine Oil
The material that can be deformed permanently by heat and pressure is called a
A. ThermosetB. ThermoplasticC. Chemical CompoundD. Polymer
Mass number of a nucleus is
A. the sum of the number of neutrons and protonsB. always more than the atomic weightC. always less than its atomic numberD. None of these
Due to rusting the weight of iron….
A. decreasesB. increasesC. remains the sameD. uncertain
When water is added to anhydrous white copper sulphate, the color will change to :
A. YellowB. GreenC. BlueD. Red
Atmosphere contains dust particles, salt grains, pollen grains, smoke, etc. which are collectively known as :
A. Water vapourB. OzoneC. AerosolsD. CFC
Supersonic Aircrafts discharge the following substance into the statosphere:
A. SO2B. CO2C. NO2D. CO