Subject :NSO Class : Class 7
Pain due to a wasp sting can be reduced by rubbing (i)
solution while pain due to a bee sting can be neutralised
by applying (ii) on the skin. Substance (iii) is used
for making pickles and when it is mixed with (ii),
it undergoes a (iv) change to evolve (v) gas.
(i), (ii), (iii), (iv) and (v) are respectively
A Formic acid, sodium carbonate, vinegar, chemical
and CO2
B Vinegar, calamine solution, vinegar, chemical and CO2
C Soap, vinegar, sodium bicarbonate, physical and H2
D None of these.
Ans 1:
Class : Class 4
Ans 2:
Class : Class 3
there are only 4 items in each option, but there are five blanks