(301) Particle clouds from where stars are formed are known as ?
- A. Stellar nurseries
- B. Star clouds
- C. Event horizons
- D. Singularities
(302) The SI standard of time is based on ?
- A. the daily rotation of the earth
- B. the frequency of light emitted by Kr86
- C. the yearly revolution of the earth about the sun
- D.none of these
(303) All of the following substances are crystalline except ?
- A. Ice
- B. Diamond
- C. Sucrose
- D. Plastic
(304) Which of the following has the largest wavelength?
- A. visible light
- B. x-rays
- C. infrared light
- D. ultraviolet radiation
(305) Quantity of fresh air required for a man is 1000 cubic feet of air for every ?
- A. 5 minutes
- B. 10 minutes
- C. 15 minutes
- D. 20 minutes
(306) Water vapour turns into clouds in the atmosphere when:
- A. It rains
- B. The temperatur e rise
- C. Dew point is reached
- D. Evaporation takes place
(307) The areas around the North and South poles within the Polar circles is called ?
- A. The Torrid Zone
- B. The Frigid Zone
- C. The Temperatur e Zone
- D. The Hardiness Zone
(308) Which of the following vitamins is synthesized in the body by intestinal bacteria ?
- A. Vitamins B1
- B. Vitamins B12
- C. Vitamins E
- D. Vitamins K
(309) Muscle fatigue is caused by the accumulation of ?
- A. Uric acid
- B. Lactic acid
- C. Oxalacetic acid
- D. Fyruvie acid
(310) What is/are the basic purpose(s) of dams?
- A. Storage of water in a large reservoir
- B. Generation of electricity
- C. Control of floods
- D. All of the above
(311) The protein content in wheat is approximately ?
- A. 6%
- B. 9%
- C. 12%
- D. 15%
(312) Approximately how many Galaxies are there ?
- A. 10 Billion Galaxies
- B. 100 Billion Galaxies
- C. 1000 Billion Galaxies
- D. 10000 Billion Galaxies
(313) The variety of coal in which the deposit contains recognizable traces of the original plant material is ?
- A. bitumen
- B. anthracite
- C. lignite
- D. peat
(314) What is the addictive drug in tobacco ?
- A. Ethanol
- B. Nicotine
- C. Ammonia
- D. Tar
(315) Fatal degenerative lung disease caused by particulate asbestos is referred to as ?
- A. asbestosis
- B. asthma
- C. allergy
- D. sinusitis
(316) Melanoma (skin cancer) is associated with ? Page 21 o
- A. ozone accumulatio fn65
- B. ozone depletion
- C. acid rain
- D. allergens
(317) Which are the largest of the white blood cells?
- A. lymphocyte s
- B. eosinophils
- C. basophils
- D. monocytes
(318) ‘Black holes’ refers to ?
- A. Holes occurring in heavenly bodies
- B. Bright spots on the sun
- C. Collapsing object of high density
- D. Collapsing object of low density
(319) Which is the nearest star to our sun?
- A. Proxima Centurai
- B. Alpha Scorpii
- C. Beta Orionis
- D. Vega
(320) who invented bulb?
- A. Philips
- B. Robert
- C. Edison
- D. Willium
(321) Which of the following female mosquito is the cause of Dengue fever?
- A. Aedes Aegypteis
- B. Anophilies
- C. Barinohils
- D. N.O.A
(322) Sun is moving around the centre of the galaxy at a velocity of km/s?
- A. 205
- B. 210
- C. 215
- D. 220
(323) Rusting of Iron involves ?
- A. Reduction
- B. Oxidation
- C. Decomposit ion
- D. Displaceme nt
(324) Water vapour beyond the dew point result in ?
- A. Precipitatio n
- B. Hailstorm
- C. Condensati on
- D. Formation of ice
(325) Approximate age of milky-way is ?
- A. 16.5 billion years
- B. 15.5 billion years
- C. 13.5 billion years
- D. 14.5 billion years