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Online General Science Quiz Set No - 32

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.

311) The quantum number that tends to specify the orientation in space for an orbital is the:
A) Principal quantum number
B) Orbital quantum number
C) Magnetic quantum number
D) Spin quantum number

312) The rate at which scanning is repeated in a CRT is called ?
A) pitch
B) bandwidth
C) refresh rate
D) resolution

313) The rate of chemical reaction does not depend on:
A) Concentration
B) Catalyst
C) Temperature
D) Pressure

314) The ratio of pure gold in 18 carat gold is:
A) 60%
B) 75%
C) 80%
D) 100%

315) The red, orange and yellow colours of leaves are due to
A) Tannins
B) Lignins
C) Carotenoids
D) Aidehydes

316) The scientist who explained about blood circulation for the first time was
A) Antonyvan Leewen Hock
B) William Harvey
C) Gregor Mendel
D) Ronald Ross

317) The shape of our milky way galaxy is
A) Circular
B) Elliptical
C) Spiral
D) None of these

318) The single acid which dissolves gold is?
A) Nitric acid
B) Aqua regia
C) Selenic acid
D) Hydrochloric acid

319) The sky appears blue due to?
A) Refraction of light
B) Diffraction of light
C) Reflection of light
D) Scattering of light

320) The smallest size of a cell that can be seen with naked eye is
A) 10 micron
B) 100 micron
C) 1000 micron
D) 1 micron