GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 098

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 098

971). Some of the elements in enzymes function as
A). chelators
B). inhibitors
C). cofactors
D). co-enzymes

Answer: co-enzymes


   
972). One of the following is used for artificial ripening of banana:
A). Auxin
B). ABA
C). Coumarin
D). Ethylene

Answer: Ethylene


   
973). Acid rain that affects plants and animals is mainly due to this gas
A). carbon dioxide
B). sulphur dioxide
C). manganese dioxide
D). hydrogen cyanide

Answer: sulphur dioxide


   
974). Kerosene oil is an example of
A). Vegetable oil
B). Essential oil
C). Mineral oil
D). Natural oil

Answer: Natural oil



975). Which is the substance that is not present in automobile exhausts?
A). oxides of nitrogen
B). carbon monoxide
C). lead
D). carbon dioxide

Answer: oxides of nitrogen


   
976). Pencil lead is made of
A). Lead
B). Graphite
C). Charcoal
D). Coal

Answer: Graphite


   
977). Temporary hardness of water is due to the presence of
A). bicarbonates of Ca and Mg
B). chlorides of Ca and Mg
C). sulphates of Ca and Mg
D). all these

Answer: bicarbonates of Ca and Mg


   
978). Vitamin B1 is called
A). Riboflavin
B). Thiamine
C). Pyridoxin
D). Citric acid

Answer: Thiamine


   
979). Hardness of water is due to the presence of
l. Salts of Calcium
II. Salts of Iron
Ill. Salts of potassium
IV. Salts of Magnesium
A). I and III
B). I and IV
C). I and II
D). II and III

Answer: I and IV