Animal which captures and readily kills living animals for its food is called___________?
A. Parasite
B. Scavenger
C. Predator
D. Mammal
E. None of these
The fruits without seed, like banana, are called_____________?
The fruits without seed, like banana, are called_____________?
A. Seedless fruits
B. Parthenogenesis fruits
C. Parthenocarpic fruits
D. placental fruits
E. Organic fruits
Quartz crystal in quartz watches work on the principle called?
Quartz crystal in quartz watches work on the principle called?
A. Photoelectric effect
B. Stark effect
C. Thermionic effect
D. Piezo-electric effect
E. None of these
Oasis is associated with___________?
Oasis is associated with___________?
A. Glaciers
B. Desert
C. Islands
D. Volcanoes
E. Fertile land
Yeast is used in making bread because it produces____________?
Yeast is used in making bread because it produces____________?
A. Carbon dioxide
B. Sugar
C. Bacteria
D. Oxygen
E. None of these
The phenomenon of Aurora Borealis, the display of red and green lights in northern hemisphere is due to radiations from____________ ?
The phenomenon of Aurora Borealis, the display of red and green lights in northern hemisphere is due to radiations from____________ ?
A. Ionosphere
B. Troposphere
C. Mesosphere
D. Stratosphere
E. None of these
Ozone layer prevents ______________ radiation from entering the atmosphere?
Ozone layer prevents ______________ radiation from entering the atmosphere?
A. Infra-red
B. Ultraviolet
C. X-rays
D. Gamma rays
E. None of these
Which one of the following is a non-metallic mineral?
Which one of the following is a non-metallic mineral?
A. Manganese
B. Magnesium
C. Gypsum
D. Bauxite
E. None of these
Sedimentary rocks are__________?
Sedimentary rocks are__________?
A. Porous
B. Hard
C. Rough
D. Brittle
E. Volcanic
A moderator is used in nuclear reactor in order to ?
A moderator is used in nuclear reactor in order to ?
A. Accelerate the neutrons
B. Slow down the speed of the neutrons
C. Increase the number of elections
D. Decrease the number of electrons
E. None of these