1) Match the following using codes given below:
A)Glass 1) Phosphorous
B)Cement 2) Clay
C)Matches 3) Silica
D)Ink 4) Carbon black
Codes:
a) 3 1 4 2
b) 1 2 3 4
*c) 3 2 1 4
d) 4 2 1 3
2) What is the composition of baking powder?
a)Na2CO3+Acetic acid
b)NaHCO3+ Citric acid
c)NaHCO3+Na2CO3
*d)NaHCO3 Tartaric acid
3) What is THERAPEUTICS?
*a)Science of art of heating
b)Science of art of cosmetics
c)Science of medicine
d)Science of nature
4) Identify the manmade element
a) Carbon
b) Gold
*c) Californium
d) Calcium
5) Which of the following is not an inert gas?
a) Helium
b) Neon
*c) Freon
d) Xenon
6) The metal present in vitamin B-12 is
a) Magnesium
b) Copper
c) Iron
*d) Cobalt
7) LPG contains
a)Methane, Ethane and Hexane
b)Ethane, Hexane and Nonane
*c)Methane, Butane and Propane
d)Ethane, Octane and Nonane
8) Natural rubber is apolymer of
a) Ethylene
*b) Isoprene
d) Buna-S
9) A photographic plate uses
*a) Silver bromide
b) Silver chloride
c) Silver iodide
d) Potassium bromide
10) The sour taste of curd is due to
a) Acetic acid
b) citric acid
*c) Lactic acid
d) tartaric acid
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