Q NO. 1: Choose the right answer.
1) The symbol of gold is:
a) G b) Au c) Ag d) Go
2) Atmosphere has __ type of layers:
a) 3 b) 4 c) 5 d) 6
3) How many elements are discovered so far:
a) 118 b) 120 c) 122 d) 125
4) The density of metals is:
a) Low b) High c) Intermediate d) Zero
5) Sugar is example of:
a) Compound b) Mixture c) Molecule d) Atom
6) ———- is the solid which trapped on filter paper:
a) Filtrate b) Residue c) Filteration d) None
7) ——— is the gas used in fire extinguishers:
a) Carbon Dioxide b) Oxygen c) Hydrogen d) Nitrogen
8) When solid particles and gases trapped in air it forms :
a) Rain b) Fog c) Smoke d) Smog
9) The gas used to fill balloons is:
a) H2 b) He c) O2 d) N2
10) Which of following is not a constituent of air:
a) Oxygen b) Nitrogen c) Hydrogen d) Bromine
11) Blood samples can be separated through:
a) Evaporation b) Distillation c) Filtration d) Chromatography
12) Si is symbol of:
a) Silver b) Silicon c) Sulphur d) Sodium
13) The union of two same kind of atoms is called :
a) Molecule b) Compound c) Mixture d) None
14) The extend of atmosphere is ———- km form earth:
a) 500-700 b) 700-900 c) 600-800 d) 800-900
15) Ozone is present in:
a) Air b) Atmosphere c) Space d) Stratosphere
16) Filter paper is used in the process of:
a) Evaporation b) Sedimentation c) Filteration d) None
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