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Online General Science Quiz Set No - 27

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.

261) The gases used in different types of welding would include:
A) Oxygen & Hydrogen
B) Oxygen, acetylene & argon
C) Oxygen & acetylene
D) Oxygen, hydrogen & nitrogen

262) The 'Green House effect' is produced due to the presence of excess amount of ?
A) Nitrogen dioxide
B) Methane
C) Carbon monoxide
D) Sulphur dioxide

263) The group of metals Fe, Co, Ni may be best called as:
A) Alkali metals
B) Rare metals
C) Main group metals
D) Transition metals

264) The hardest substance available in earth is:
A) Platinum
B) Silicon
C) Diamond
D) Gold

265) The high temperature superconductors are:
A) Metal alloys
B) Ceramic oxides
C) Inorganic polymers
D) Pure rare earth metals

266) The immediate source of energy for all cellular activity, including the contraction of muscle fibers is?
A) ATP
B) RNA
C) FAD
D) NAD

267) The inert gas which is substituted for nitrogen in the air, used by deep sea drivers for breathing is:
A) Helium
B) Argon
C) Krypton
D) Xenon

268) The information in 'EEPROM' is erased by using ______
A) Electrons
B) UV-rays
C) Electrical Signals
D) Digital Signals

269) The ingredients of Gun metal are:
A) Iron, tin
B) Copper, tin
C) Iron, brass, tin
D) Iron, zinc, titanium

270) The Instrument used to measure the force and velocity of the wind is
A) Ammeter
B) Anemometer
C) Altimeter
D) Audiometer