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What fraction of the figure is shaded ?

(A)

(B)

(C)

(D)

A typical flower has a stalk called P. The uppermost part of stalk is wider and is known as Q. On the top of Q different whorls are present. The outermost whorl consists of green leaf-like structures called R. The inner whorl consists of S which are brightly coloured and scented.
What are P, Q, R and S ?
P-----Q-----R-----S
(a) Thalamus-----Pedicel-----Petals-----Sepals
(b) Pedicel-----Thalamus-----Petals-----Sepals
(c) Pedicel-----Thalamus-----Sepals-----Petals
(d) Thalamus-----Pedicel-----Sepals-----Petals

Manomay conducted an experiment where 4 identical metal balls were allowed to roll down 4 similar curves with surfaces of different texture. The time taken for the ball to come to a complete stop for each of the different surfaces was recorded in the table below.

Which curve has the roughest surface?

A P
B Q
C R
D S

Arrange these as first, second and third class levers?

AA, B, C
BB, A, C
CC, B, A
DC, A, B

The young plant shown here was grown from a seed that most likely came from which of the following plants?

(A)

(B)

(C)

An equilibrium state of a body is considered if all the forces acting on it

A are in the same direction
B are equal in magnitude
C have zero resultant
D can be arranged in pairs.

Which pair shows correct match of organism with its breathing organs?

ADolphin-Blow holes
BSnake-Moist skin
CEarthworm-Spiracles
DWhale-Gills

Which of the following statements is false regarding physical and chemical properties?

A The composition of matter need not be changed for observing a physical change.
B During a chemical reaction, molecules undergo a change and their concentration keeps decreasing along with time.
C Chemical property is the ability of matter to undergo some chemical change because of its composition.
D During a chemical reaction, same molecules are present throughout the change.