GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 101

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 101

1001). The less electronegative element in the halogen family is
A). Bromine
B). Chlorine
C). Fluorine
D). lodine

Answer: lodine


   
1002). In the vapour state, phosphorus exists as
A). P2
B). P
C). P4
D). P3

Answer: P4


   
1003). Ammonia ls
A). an acid
B). a base
C). neutral
D). dual in nature

Answer: a base

   
1004). Rectified spirit is
A). 95% ethanol
B). 100% ethanol
C). ethanol with 5% methanol
D). power alcohol

Answer: 95% ethanol


   
1005). Many organic compounds have the same molecular formula and they differ in their physical and chemical properties. This phenomenon is called as
A). Homologous series
B). Isomerism
C). Isotopes
D). Fermentation

Answer: Isomerism



1006). The chemical name of baking soda is
A). Sodium chloride
B). Sodium phosphate
C). Sodium carbonate
D). Sodium bicarbonate

Answer: Sodium bicarbonate


   
1007). Industrially used process for the conversion of Ethylene to polyethylene is known as
A). hydrogenation
B). substitution
C). polymerization
D). addition

Answer: polymerization


   
1008). Epsom salt is
A). ZnSO4.7H2O
B). MgSO4.7H2O
C). CuSO4.7H2O
D). FeSO4.7H2O

Answer: MgSO4.7H2O



   
1009). When an acid reacts with an alkali the following change is observed?
A). Heat is evolved
B). A pop sound is produced
C). A foul smell emanates
D). Light is produced

Answer: Heat is evolved


   
1010). The gas evolved during the fermentation of sugar solution is
A). sulphur dioxide
B). carbon monoxide
C). carbon dioxide
D). methane

Answer: methane