Mark the incorrect match.
(i) Winnowing → Different weights
(ii) Filtration → Soluble solids
(iii) Handpicking → Different sizes
(iv) Evaporation → Salt from sea water
A Both (i) and (iii)
B Both (i) and (ii)
C Only (iv)
D Only (ii)
Manya looked at the sky at night and noticed that there was no Moon in the sky. It
was her birthday, i.e., 7th February. Her brother, Adhiraj's birthday falls exactly two
weeks after her birthday. Which shape of Moon would she most likely observe on her
Low atmospheric pressure exists on the Earth in which of the following latitudes?
A At the equator only
B At 30°North pole and South pole
C At the poles
D At the equator and at 60°North pole and South pole
Refer to the given figures P, Q, R and S.
Which of the following statements are correct regarding them?
(i) P is the mould from which penicillin is made.
(ii) R is considered as connecting link between plants and animals.
(iii) Q and S are parasites which live in the bodies of other organisms including human beings.
(iv) R and S bear chlorophyll and prepare food is presence of sunlight.
(v) S is colonial form of algae.
A (ii), (iv) and (v) only
B (i), (ii), (iv) and (v) only
C (i), (iii) and (iv) only
D (i), (ii), (iii), (iv) and (v)
The given diagram shows a hill with four labelled positions W, X, Y and Z. When a ball is rolled down the hill, then from which position will it finish rolling with the greatest speed?
A Position W
B Position X
C Position Y
D Position Z
Why is the answer W ?Please explain.
The given figure shows a type of vegetative plant propagation that gives rise to new plants. What is it called ?