GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 106

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 106

1051). Aqua regla is a mixture of
A). Conc. HCL 3 parts + conc. HNO3 1 part
B). Conc. HCL 3 parts + conc. H2SO4 1 part
C). Conc. H2SO4 1 parts + conc. HNO3 1 part

Answer: Conc. HCL 3 parts + conc. HNO3 1 part



   
1052). White phosphorus reacting with sodium hydroxide gives
A). phosphoric acid
B). phosphine
C). red phosphorous
D). phosphorous pentoxide

Answer: phosphine


   
1053). Man-made element is
A). Plutonium
B). Uranium-235
C). Thorium
D). Radium

Answer: Uranium-235


   
1054). The insulator among the following is
A). silicon
B). aluminium
C). graphite
D). diamond

Answer: diamond


   
1055). Consider the following statements:
Assertion (A): In gas balloon helium replaces hydrogen.
Reason (R): Helium is incombustible .
Now select your answer according to the coding , scheme given below.
A). Both (A) and (R) are true and (R) is the correct explanation of (A)
B). Both (A) and (R) are true) but (R) is not the correct explanation of (A)
C). (A) is true, but (R) is false
D). (A) is false, but (R) is true.

Answer: Both (A) and (R) are true and (R) is the correct explanation of (A)



1056). Identify the correct order of rusting
A). Iron < Silver < Platinum.
B). Platinum < Silver < Iron.
C). Iron < Platinum < Silver.
D). Silver < Iron < Platinum

Answer: Platinum < Silver < Iron.


   
1057). The chemical that could be used in refrigeration is
A). Carbon dioxide
B). Ammonium hydroxide.
C). Ammonium Chloride
D). Ammonia

Answer: Ammonia


   
1058). Which of the following is a laughing gas?
A). Carbon monoxide
B). Carbon dioxide
C). Nitrous oxide
D). sulphur dioxide

Answer: Nitrous oxide


   
1059). Coating of zinc over iron article is known
A). Galvanisation
B). Electroplating
C). Electro refining
D). Etching

Answer: Galvanisation


   
1060). Tincture of iodine is
A). Iodine
B). Iodine and iodoform
C). Iodine and potassium iodide
D). Iodoform

Answer: Iodine