The stages in the purification of water is given as follows:
Which of the following correctly represents order of purification of water?
A (ii) → (iii) → (i)
B (ii) → (i) → (iii)
C (iii) → (ii) → (i)
D (i) → (ii) → (iii)
ans. is wrong. it should be I, iii,ii
Select the character which is not common to the given animal group.
A They all breathe through lungs.
B They have hair on their body.
C Internal fertilization takes place in them.
D They all give birth to young ones.
I think answer should be A , Platypus lay eggs and do not give birth to young ones
Refer to the given Venn diagram and select the correct option regarding X, Y and Z.
A Organism X can be parakeet while organism Y can be swan.
B Organism Y can be duck while organism X can be penguin.
C Organism Z can be dolphin while organism Y can be frog.
D Organism Y can be goose while organism Z can be penguin.
Which of these Railways of India is listed as World Heritage Site by UNESCO ?
(A) Darjeeling Himalayan Railway
(B) Nilgiri Mountain Railway
(C) Kalka Shimla Railway
(D) All of these