MULTIPLE CHOICE QUESTIONS AND ANSWERS : SET – 2
1. The atom of which of the following element has the smallest nucleus?
(a) Nitrogen
(b) Oxygen
(c) Hydrogen
(d) Helium
Ans: (c)
2. Who was the inventor of atomic theory?
(a) Rutherford
(b) Madam Curie
(c) John Dalton
(d) Albert Einsten
Ans: (c)
3. Nucleon is the name which is used for: [BPSC ASI 2002]
(a) electron and proton
(b) proton and neutron
(c) electron and neutron
(d) None of these
Ans: (b)
4. Consider the following: [CSAT-IAS (Pre) 2011]
1) Carbondioxide
2) Oxides of Nitrogen
3) Oxides of Sulphur
Which of the above is / are the emission / emissions from coal combustion at thermal power plants?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
Ans: (a)
5. Minerals are: [BPSC 2011]
(a) liquids
(b) inorganic solids
(c) gases
(d) all of the above
Ans: (b)
6. The number of neutrons and protons in the nucleus of 88Ra226 are:
(a) 138 and 88
(b) 88 and 138
(c) 226 and 88
(d) 88 and 226
Ans: (a)
7. Who was the inventor of radioactivity :
(a) Madam Curie
(b) Irine Curie
(c) Henery Bacqurel
(d) Rutherford
Ans: (c)
8. A single type of atom is found in : [BPSC 2011]
(a) compounds of minerals
(b) mixture of minerals
(c) natural elements
(d) none of the above
Ans: (c)
9. Which one of the following is negatively charged? [BPSC (Pre) 2002]
(a) α - rays
(b) β - rays
(c) γ-rays
(d) X-rays
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