(851) Freezing point of water is ?
- A. 0 °C
- B. -2 °C
- C. -4 °C
- D. None of above
(852) Jupiter has known moons.
- A. 62
- B. 73
- C. 79
- D.53
(853) Chemical Name of Dry Ice?
- A. Solid Carbon Dioxide
- B. Calcium Carbon
- C. A&B
- D. Sodium Oxide
(854) Density of Milk is ?
- A. 1.024 g/cm3
- B. 1.034 g/cm3
- C. 1.044 g/cm3
- D. 1.054 g/cm3
(855) There is no connection of supernova explosion with ?
- A. Cosmic rays
- B. Pulsars
- C. The formation of heavy elements
- D. Quasars
(856) Humans can hear in the range of to Hertz (Hz).?
- A. 10 Hz to 10,000 Hz.
- B. 20 Hz to 20,000 Hz.
- C. 30 Hz to 30,000 Hz.
- D. 40 Hz to 40,000 Hz.
(857) The time taken by Sun to revolve around the center of our galaxy is ?
- A. 150 million years
- B. 250 million years
- C. 300 millon years
- D. 350 millon years
(858) Frog Heart has how many chambers?
- A. 2
- B. 3
- C. 4
- D. 5
(859) What are rows in Periodic table called?
- A. Period
- B. Group
- C. Verticals
- D. Perpendicul ars
(860) What prevents the earth’s atmosphere from drifting away into space?
- A. Gravity
- B. Ozone layer
- C. Tropospher e
- D. Ecosystem
(861) Most of the ozone in the atmosphere is concentrated in the ?
- A. Mesospher e
- B. Tropospher e
- C. Stratospher e
- D. Ionosphere
(862) A slow-running pendulum clock can be speeded up by ?
- A. Increasing the length of the rod
- B. Increasing the weight of the bob
- C. Reducing the length of the rod
- D. Reducing the weight of the bob
(863) As the temperature of ice rises, the ice melts and its density?
- A. Decreases
- B. Remain constant
- C. Increases
- D. Increases upto 10C
(864) What is used in making of alloys?
- A. Gypsum
- B. Granite
- C. Chromium
- D. Lime- stone
(865) What amount of fats give energy of 9.3 K Calories?
- A. 0.5 gram
- B. 1.0 gram
- C. 2.0 gram
- D. 4.1 gram
(866) Which synthetic fibre is known as artificial Silk?
- A. Nylon
- B. Rayon
- C. Cotton
- D. Terylene
(867) Radon is ?
- A. germon radio
- B. radio active gas
- C. artificial fibre
- D. an explosive
(868) The alcohol used in the preparation of dynamite is ?
- A. ethyl alcohol
- B. glycerol
- C. glycol
- D. methyl alcohol
(869) Science is derived from Latin word “scientia” which means ?
- A. Reasoning
- B. Logic
- C. Knowledge
- D. Life
(870) Which of the following animals does not have nervous system?
- A. Bat
- B. Squirrel
- C. Sponges
- D. Lizard
(871) Which is the hardest substance in the human body?
- A. Tooth enamel
- B. Skull
- C. Knee cap
- D. Rib
(872) Which of the following gases do plants and trees give out during photosynthesis?
- A. Hydrogen
- B. Nitrogen
- C. Oxygen
- D. Carbon dioxide
(873) Who invented the Hot Air Balloon?
- A. Davy
- B. Montgolfier
- C. Edison
- D. Jarvik
(874) Ombrophobia is fear of ?
- A. Rain
- B. Snow
- C. Smog
- D. None of these
(875) Which of the part of tongue bears cells for sour taste?
- A. Front
- B. Back
- C. Sides
- D. Middle