(676) Which of the following have maximum calorific value?
- A. Carbohydra tes
- B. Fats
- C. Proteins
- D. Vitamins
(677) Trachoma is a disease of the ? Page 44 o
- fA6.5Liver
- B. Eyes
- C. Lungs
- D. Kidneys
(678) The sun appears red at sunrise and sunset while it appears white at noon, because
- A. Of refraction
- B. It is cooler at sunrise and at sunset
- C. Of diffraction leading to red end of the spectrum reaching the earth.
- D. Of Scattering of light due to dust particles and air molecules.
(679) The rear view mirror of a motor vehicle is ?
- A. Concave
- B. Plane
- C. Convex
- D. Biconcave
(680) The absorption of ink by blotting paper involves ?
- A. Viscosity of ink
- B. Capillary action phenomeno n
- C. Diffusion of ink through the blotting
- D. Siphon action
(681) Albatros is ?
- A. A sea bird
- B. A beetle
- C. A fruit
- D. None
(682) One of the following is a water soluble vitamin?
- A. Vitamin A
- B. Vitamin D
- C. Vitamin K
- D. None
(683) The alpha particles are compact clusters of ?
- A. Electron and Proton
- B. Two Protons and two Neutrons
- C. Three protons and three Neutrons
- D. None
(684) Which of the following is not an enzyme?
- A. Chemotryps in
- B. Secretin
- C. Pepsin
- D. none
(685) Fuse wire is made of ?
- A. 63% tin and 37% lead
- B. 63% lead and 37% tin
- C. 63% tin and 37% aluminum
- D. 63% lead and 37% aluminum
(686) A device that converts mechanical energy into electric energy is called ?
- A. Motor.
- B. Transforme r.
- C. Coil.
- D. Generator.
(687) SI unit of time is ?
- A. second
- B. kilo gram
- C. meter
- D. volt
(688) The main function of kidney is ?
- A. to control blood pressure
- B. to control body temperatur e
- C. to remove waste from blood
- D. to help in digestion of bady
(689) Sound cannot travel through
- A. Solid
- B. Liquid
- C. Gases
- D. Vaccum
(690) The human brain uses percent of the total oxygen and blood in the body?
- A. 20
- B. 12
- C. 35
- D. 48
(691) The longest bone in human body is ?
- A. Ulna
- B. Tibia
- C. Femur
- D. Humerus
(692) Which Gas is used in the preparation of Soft drinks?
- A. Oxygen
- B. Carbon dioxide
- C. Nitrogen
- D. Halogen
(693) When our sun reaches the end of its red giant phase, it will turn into a ?
- A. Supernova
- B. White Dwarf
- C. Black Hole
- D. Neutron Star
(694) The sun is made up of 99.9% of and ?
- A. Oxygen and Hydrogen
- B. Hydrogen and Sulfur
- C. Carbon and Silicon
- D. Hydrogen and Helium
(695) Which of the following is closest to a yard in length?
- A. 0.01m
- B. 0.1m
- C. 1m
- D. 10m
(696) The increasing vapor pressure caused by heating a liquid is due to ?
- A. increase inter- molecular interactions
- B. increasing potential energy of molecules
- C. increasing kinetic energy of molecules
- D. decreasing surface tension
(697) One of the following ways of expressing the concentration of a solution does not depend on temperature. It is ?
- A. Molarity
- B. Molality
- C. Normality
- D. Formality
(698) What is meant by “Equinox”?
- A. The longest day
- B. The shortest day
- C. The sun- month long day
- D. Equal duration of day and night
(699) A wind which reverses seasonally is known as ?
- A. Trade
- B. Cyclonic
- C. Monsoon
- D. Polar
(700) Gulf streams are caused by .
- A. Cyclones
- B. Ocean Pressure
- C. Temperatur e
- D. Difference in water level