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Online General Science Quiz Set No - 28

General Science questions have been taken from previous years question papers of different competitive examinations such SSC CGL, SSC CHSL, CDS, NDA, Bank, State PSC, Railways, MAT, CAT, etc.

271) The isotope of Uranium capable of sustaining chain reaction is:
A) U 235
B) U 238
C) U 239
D) None of these

272) The layer present in between xylem and phloem in Dicot Stem is
A) pith
B) stele
C) cambium
D) starch sheath

273) The lightest radioactive element is?
A) Tritium
B) Uranium
C) Plutonium
D) Deuterium

274) The location and energy of an electron in an atom can be specified by:
A) Atomic mass
B) Atomic number
C) Quantum numbers
D) None of these

275) The main constituents of Pearl are:
A) Calcium Carbonate, Magnesium Carbonate
B) Calcium oxide, Ammonium Chloride
C) Argonite , Chonchiolin
D) Ammonium Sulphate, Sodium Carbonate

276) The main function of insulin in the human body is ?
A) to help in digestion of food
B) to maintain blood pressure
C) to control the level of sugar in the body
D) to check the level of iodine in the body

277) The major component in the LPG is?
A) ethane
B) propane
C) methane
D) butane

278) The major ingredient of leather is:
A) Carbohydrate
B) Collagen
C) Polymer
D) Nucleic acid

279) The manufacture of iron ore involves the process of:
A) Oxidation
B) Reduction
C) Fractional distillation
D) Electrolysis

280) The material used for bleaching paper pulp is:
A) Chlorine
B) Caustic soda
C) Sodium Hypochlorite
D) Lime