GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 064

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 064

631). What product is given out at the anode when CuSO4 H2SO4 is electrolysed?
A). H2O
B). CO2
C). H3O
D). H2S

 Answer: H3O



   
632). The acid present in lemon is
A). citric acid
B). tartaric acid
C). malic acid
D). lactic acid

Answer: citric acid


   
633). A molar solution is one that contains one mole of a solute in
A). 1000 gm of the solvent
B). 1000 ml of the solution
C). one litre of the solvent
D). 22.4 litres of the solution

Answer: 1000 ml of the solution

   
634). Fat is a
A). protein
B). lipid
C). amino acid
D). base

Answer: lipid

   
635). Calorific value is in the order of
A). fats > carbohydrates > proteins
B). proteins > carbohydrates > fats
C). carbohydrates > fats > proteins
D). none

Answer: fats > carbohydrates > proteins



636). Vulcanisation is the process of adding ......... to rubber
A). iron
B). sulphur
C). carbon
D). cobalt

Answer: sulphur

   
637). Which one of the following is not a radioactive substance?
A). calcium
B). uranium
C). thorium
D). radium

Answer: calcium


   
638). Optical isomers have
A). plane of symmetry
B). centre of symmetry
C). both (A) and (B)
D). neither (A) nor (B)

Answer: both (A) and (B)


   
639). The element with the maximum number isotopes in nature is
A). carbon
B). uranium
C). hydrogen
D). lead

Answer: uranium


   
640). How can a given colourless liquid be tested whether it is water or not?
A). smelling
B). tasting
C). adding a pinch of anhydrous copper sulphate
D). adding phenolphthalein

Answer: adding a pinch of anhydrous copper sulphate