GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 117

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 117

1161). Natural gas is a mixture of aliphatic hydrocarbons. What is the main important gas available in that?

A). Oxygen O2

B). Nitrogen N2

C). Methane CH4

D). Carbon-di-oxide CO2

Answer: Methane CH4

   

1162). An alkane earth metal 'M' forms covalent compounds. It forms water soluble sulphate MSO4 and water insoluble hydroxide M(OH)2 which is amphoteric in nature. The metal 'M' is ............

A). Calcium

B). Beryllium

C). Magnesium

D). Strontium

Answer: Beryllium

   

1163). During electrolysis of molten calcium hydride .................

A). calcium is deposited at anode

B). hydrogen is liberated at anode

C). hydrogen is liberated at cathode

D). hydrogen and oxygen are liberated at cathode and anode respectively.

Answer: calcium is deposited at anode

   

1164). Aqueous solution of which of the following is a good conductor of electricity?

A). Ammonium acetate

B). Glucose

C). Ammonia

D). Acetic acid

Answer: Acetic acid

   

1165). Ammonia burnt with O2 liberate which of the following ions/radicals?

A). NH4^+ + OH

B). N2+H2O

C). NO2+H2O

D). N2+H2

Answer: N2+H2O

1166). The laws of-electrolysis are given by

A). Ostwald

B). Faraday

C). Arrhenius

D). Lewis

Answer: Faraday

   

1167). How many electrons can be accommodated in d-orbital?

A). 3

B). 6

C). 10

D). 8

Answer: 10

   

1168). The toxic carcinogenic metal ion in the following is

A). Cr^0

B). Cr^3+

C). Cr^2+

D). Cr^6+

Answer: Cr^6+

   

1169). The specific rotation, if the plane of polarisation is turned through 26.4°

traversing 20 cm. length of 20% sugar solution is

A). 6.6°

B). 0.66°

C). 66°

D). 6°

Answer: 66°

   

1170). Which of the following is natural polymer?

A). cellulose

B). polystyrene

C). polythylene

D). nylon

Answer: cellulose