GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 103

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 103

1021). Match List-l correctly with List-ll and select your answer using the codes given below:
List-I                                        List-II
a) Methane                          1. C2H2
b) Ethylene                          2. C2H6
c) Ethane                            3. C2H4
d) Acetylene                        4. CH4

a b c d
A). 4 3 2 1
B). 1 2 3 4
C). 2 3 4 1
D). 3 4 1 2

Answer: 4 3 2 1


   
1022). Which of the following turns blue litmus red?
A). Sodium carbonate
B). Sodium hydroxide
C). Acetic acid
D). Acetaldehyde

Answer: Acetic acid


   
1023). Equilibrium constant for the equation 2SO2(g)-->2SO3(g) is

A). Kc=[SO2]^2[O2] / [SO3]^2
B). Kc=[SO2][O2] / [SO3]
C). Kc=[SO3] / [SO2][O2]
D). Kc=[SO3]^2 / [SO2]^2 . [O2]

Answer: Kc=[SO3]^2/[SO2]^2 . [O2]



   
1024). The best ductile metals are
A). aluminium, platinum
B). gold, silver
C). copper, aluminium
D). iron, nickel

Answer: gold, silver


   
1025). Consider the following statements:
I. Aluminium powder is used in making anticorrosion paints.
ll. Aluminium powder is used for packing foodstuff.
Ill. Aluminium powder is used in making electrical wires.
IV. Aluminium powder is used in making parts of aircraft
Of the statements:
A). all are correct
B). l and ll are correct
C). ll and III are correct
D). I alone is correct

Answer: I alone is correct


   
1026). The gas used for artificial ripening of green fruits is
A). Carbon dioxide
B). Ethylene
C). Ethane
D). Hydrogen

Answer: Ethylene


   
1027). An acid converts
A). red litmus into blue
B). blue litmus into red
C). no action on litmus
D). blue litmus into colourless

Answer: blue litmus into red


   
1028). Acetylene on polymerisation gives
A). Propylene
B). Benzene
C). P. V. C.
D). Polythene

Answer: Polythene

   
1029). Which enzyme converts glucose and fructose into ethyl alcohol and CO2?
A). Zymase
B). lnvertase
C). Diastase
D). Maltase

Answer: Zymase