GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 085

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 085

841). Which among the following has the highest fuel value?
A). protein
B). fat
C). carbohydrate
D). amino acid

Answer: fat


   
842). Which of the following has maximum electronegativity?
A). Al
B). Si
C). S
D). P

Answer: S


   
843). In an endothermic reaction
A). ᐃH is positive
B). ᐃH is negative
C). Ea is positive
D). Ea is negative

Answer: ᐃH is positive


   
844). Sodium bicarbonate is called
A). washing soda
B). baking soda
C). common salt
D). gypsum

Answer: baking soda


   
845). The chemical equation that correctly represents the reaction between hydrogen and oxygen is
A). 2H+O->H2O
B). H2+O2->H2O+O
C). 2H+O2->H2O+O
D). 2H2+O2->2H2O

Answer: 2H2+O2->2H2O



846). Which is neither an element nor a compound?
A). gold
B). water
C). air
D). glucose

Answer: air


   
847). Which of the following substances is used for preservation of food grains?
A). sodium benzoate
B). vinegar
C). sodium chloride
D). potassium permanganate

Answer: sodium benzoate


   
848). The water that does not produce good lather with soap is called
A). soft water
B). heavy water
C). hard water
D). polluted water

Answer: hard water


   
849). The acid used in a car battery is
A). hydrochloric acid
B). nitric acid
C). sulphuric acid
D). carbonic acid

Answer: sulphuric acid


   
850). Which of the following gases makes the major proportion of air?
A). carbon dioxide
B). nitrogen
C). oxygen
D). argon

Answer: nitrogen