WorksheetsChemistry Quiz
Total questions: 10
Worksheet time: 5mins
Which one of the following is not used to dope a semiconductor ?
Al
B
In
Au
The macro-nutrient provided by inorganic fertilization are ?
C, Fe, B
C, N, P
N, P, K
Mg, Zn, Fe
Which of the Carbon Compounds is used as fire extinguisher ?
CS<sub>2</sub>
CHCl<sub>3</sub>
CH<sub>3</sub>Cl
CCl<sub>4</sub>
Heavy metal pollution of water is caused by ?
Acid Plants
Paints
Wood Burning
Domestic Sewage
Supersonic Aircrafts discharge the following substance into the statosphere:
SO<sub>2</sub>
CO<sub>2</sub>
NO<sub>2</sub>
CO
Atmosphere contains dust particles, salt grains, pollen grains, smoke, etc. which are collecctively known as?
Water vapour
Ozone
Aerosols
CFC
When water is added to anhydrous white copper sulphate, the color will change to :
Yellow
Green
Blue
Red
Due to rusting the weight of iron?
Decrease
Increases
Remains the same
Uncertain
The material that can be deformed permanently by heat and pressure is called ?
Thermoset
Thermoplastic
Chemical Compound
Polymer
The oil used in the froth floatation process is?
Pine oil
Coconut oil
Olive oil
Kerosene
