The leaves of rainforest trees get rid of heat mainly by
(a) Evapotranspiration
(b) Convection
(c) Conduction
(d) Radiation
Answer:
The word ecology was first used by
(a) A.G. Tansley
(b) C.J. Krebs
(c) Tailor
(d) Reiter
Answer:
In the nitrogen cycle, maximum amount of nitrogen fixation is caused by
(a) Atmospheric processes
(b) Industrial processes
(c) Plants
(d) Bacteria
Answer:
Forest fires are natural sources of
(a) Nitrogen dioxide
(b) Hydrogen sulphide
(c) Hydrocarbons
(d) Carbon monoxide
Answer:
Most commonly used chemical for stain removal is
(a) Mineral water
(b) Salted water
(c) Javelle water
(d) Citric acid
Answer:
Two planets on which the Sun rises in the west are
(a) Venus and Uranus
(b) Uranus and Mars
(c) Mars and Neptune
(d) Saturn and Jupiter
Answer:
The crystal of diamond shines due to
(a) Crystal lattice
(b) High density
(c) Total internal reflection
(d) None of these
Answer:
Out of the following, which is not emitted by radioactive substance?
(a) Neutrons
(b) Alpha particles
(c) Electromagnetic radiations
(d) Electrons
Answer:
Ghasiti Begam, Shaukat Jang, Rajbhallabh and Yar Latif Khan were sworn enemies of
(a) Shuja-ud-Daulah
(b) Siraj-ud-Daulah
(c) Nanda Kumar
(d) Nawab Alivardi Khan
Answer:
Peshwa Baji Rao-I obtained from the Mughals the subedaris of
(a) Khandesh and Berar
(b) Gujarat and Malwa
(c) Malwa and Bijapur
(d) Ahmadnagar and Nagaur
Answer: