Chemistry MCQ Questions Answers – Sample Model Paper Practice Set Part 4
1) Which of the following is a halogen?
a) Astatine
b) Ruthenium
c) Radon
d) Cesium
2) The number of valency electrons in carbon atom is
a) 2
b) 6
c) 4
d) 0
3) The proton was discovered by
a) Thomson
b) Goldstein
c) Faraday
4) Heavy water was discovered by
a) Urey
b) Stars
c) F.W. Aston
d) T.W. Richards
5) The Human body contains about
a) 20% water
b) 70% Water
c) 10% water
d) 50% water
6) A catalyst is a substance which
a)increases the activation energy
b)increases the rate of reaction and increases the equilibrium concentration of products
c)changes the equilibrium of a reaction so that the concentration of the product increases
d)hastens the attainment of equilibrium
7) Boiler scales are also called
a) Lye
b) Slag
c) Scum
d) Fur
8) How many different oxides are formed by nitrogen ?
a)two
b)three
c)four
d)five
9) Which of the following compounds used as a purgative:?
a) Blue vitriol
b) Mohr’s salt
c) Gypsum
d) Epson-salt
10) The material that can be deformed permanently by heat and pressure is called a
a) Thermoset
b) Thermoplastic
c) Chemical Compound
d) Polymer