GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 054

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 054

531). Which is not correctly matched?
A). Kekule - Structure of benzene
B). Contact process - Synthesis of ammonia
C). Haworth - Synthesis of anthracene
D). Vant Hoff - Dilute solutions

Answer: Haworth - Synthesis of anthracene


   
532). A solution of potassium nitrate is
A). alkaline
B). neutral
C). alkaline or acidic depending on the concentration
D). acidic

Answer: acidic


   
533). How is the degree of hardness of water expressed?
A). parts per millions of calcium chloride
B). ppm of magnesium carbonate
C). ppm of magnesium chloride
D). ppm of calcium carbonate

Answer: ppm of magnesium carbonate

   
534). Vinegar is
A). 2% ethanol
B). 6-10% acetic acid
C). 1% glucose
D). 3% acetone

Answer: 6-10% acetic acid

   
535). Gobar gas is a mixture of
A). CH4, CO2 and H2
B). C2H6, CO2 and H2
C). C2H4, CO and H2
D). CH4CO and H2

Answer: CH4, CO2 and H2


536). Sand is
A). P2O5
B). NO2
C). SiO2
D). MgO

Answer: SiO2



   
537). Rainwater helps to increase the .........of the soil
A). phosphorous content
B). nitrogen content
C). calcium content
D). potash content

Answer: nitrogen content


   
538). Which one of the following is not found in protein?
A). S
B). P
C). C
D). O

Answer: P


   
539). Heavy water is the name given to
A). 2H2O
B). T2O
C). Deuterium
D). D2O

Answer: D2O


   
540). Magnetron is used for the production of
A). X-rays
B). Cathode rays
C). Microwaves
D). Positive rays

Answer: Microwaves