Pick the odd one out from each group given below and select the correct option.
(i) Haematite, Bituminous, Bauxite, Pyrite
(ii) Malaria, Dengue, Sleeping sickness, Typhoid
(iii) Pliers, Scissors, Nutcracker, Crowbar
A
B
C
D
Ans 1:
Class : Class 6
Ans is A because bituminous is not an ore, typhoid is not a vector-borne disease and nutcracker is not a class 1 lever.
Ans 4:
Class : Class 9
The correct answer is A because Bituminous is not a ore, typhoid is a water-borne disease and rest are vector-borne disease and nutcracker is an example of 2nd class lever whereas all the other are 1st class lever.