Q.1 Which of the following gases is present under pressure in soft drinks? (SSC 2001)
(1) Oxygen (2) Nitrogen
(3) Carbon Dioxide (4) Nitrous Oxide
Ans. (3)
Q.2 The Substance which does not expand on going from liquid state to solid state is ?
(SSC 2001)
(1) Water (2) Cast—Iron
(3) Aluminum (4) Type metal
Ans. (4)
Q.3 The radio—active element used in heart pacemakers is? (SSC 2001)
(1) Uranium (2) Deuterium
(3) Plutonium (4) Radium
Ans. (1)
Q.4 The element which is commonly used in nuclear for producing electricity by nuclear fission is? (SSC 2001)
(1) Radium (2) Plutonium
(3) Uranium (4) Deuterium
Ans. (3)
Q.5 Exobiology deals with the study of? (SSC 1999)
(1) External characters of living organisms
(2) Life on the surface of the earth
(3) Life in the outer layers of atmosphere
(4) Life in other planers and space
Ans. (4)
Q.6 Animals do not have enzyme systems which enable them to make use of the energy from? (SSC 1999)
(1) Fat (2) Water
(3) Protein (4) Carbohydrate
Ans. (1)
Q.7 A Clone is a colony of? (SSC 1999)
(1) Cells having different shapes
(2) Cells having similar shape
(3) Cells having similar genetic constitution
(4) Cells having different genetic constitutions
Ans. (3)
Q.8 The pollen grains of flowers pollinated by insects are? (SSC 1999)
(1) Smooth and Dry (2) Rough and Sticky
(3) Rough and Dry (4) Large and Showy
Ans. (2)
Q.9 The cross—section of a stem of tree has fifty rings, what is the age of the tree?
(SSC 1997)
(1) 40—60 (2) 120—150
(3) 70—100 (4) 160—200
Ans. (3)
Q.10 Onion is a modified form of? (SSC 1997)
(1) Leaf (2) Stem
(3) Root (4) None of these
Ans. (2)
