GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 093

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 093

921). The number of elements present in the lanthanide series is
A). 2
B). 10
C). 7
D). 14

Answer: 14


   
922). The pH of dilute acetic acid is 2. It will increase on the addition of
A). sulphuric acid
B). common salt
C). aquebus ammonia
D). cane sugar

Answer: aquebus ammonia

   
923). The acid used as hypnotic agent is
A). tartaric acid
B). benzoic acid
C). barbilutic acid
D). butanoic acid

Answer: barbilutic acid


   
924). For the manufacture of cement, which is used in the largest quantity?
A). Alumina
B). Calcium oxide
C). Gypsum
D). Silica

Answer: Calcium oxide


   
925). Drinking soda is
A). neutral
B). reducing agent
C). acidic
D). basic

Answer: acidic


926). The compound that contains maximum amount of nitrogen is
A). urea
B). ammonium sulphate
C). ammonium nirate
D). ammonium chloride

Answer: urea


   
927). During dehydration, the substance that is lost by the body is
A). Sugar
B). Sodium chloride
C). Calcium phosphate
D). Potassium chloride

Answer: Sodium chloride


   
928). Carborundum ls used in
A). grinding glass
B). paint
C). medicine
D). fertilizer

Answer: grinding glass


   
929). The compound used in smoke screen is
A). calcium carbide
B). calcium phosphide
C). zinc phosphide
D). calcium phosphate

Answer: calcium phosphide


   
930). Which one of the following elements has the same atomic number and mass number?
A). Hydrogen
B). Helium
C). Oxygen
D). Nitrogen

Answer: Hydrogen