User Forum

The function of molar teeth can be best illustrated by the function of _____.

A
B
C
D

Kavita measured the amount of force applied to move a wooden block on four different surfaces W, X, Y and Z. The result of her experiment is shown in the given table. Which of the following surfaces offers least amount of friction?


AW
BX
CY
DZ

Misha placed the same metal bar at different positions, X, Y and Z one by one, as shown here. Which of the following options shows the most appropriate length of metal bar shadow when placed at positions Y and Z, respectively if length of metal bar shadow is 20 cm when metal bar is placed at position X ?


A
B
C
D

Study the items listed in the given table. Which of the following options correctly identifies X and Y?


A
B
C
D

Refer to the given figure of aquatic plants and select the correct statement.
(i) In Y stomata are present only on the lower surface of the leaves.
(ii) Wolffia and Pistia are other examples of X type of plant.
(iii) The leaves of Z plant do not have stomata.
(iv) Roots of X plant fix them to the bottom of the pond.


A(i) and (iv) only
B(ii) and (iii) only
C(i) and (iii) only
D(i), (ii) and (iii) only

Four metal buttons P, Q, R and S, were attached to the metal ring with same amount of wax as shown in the figure. When a lighted candle was placed below the rim of the metal ring, the metal buttons dropped down in the order, R, Q, P and S. At which position out of W, X, Y or Z, was the lighted candle placed?


AW
BX
CY
DZ

Refer to the given food chain. Select the option which correctly identifies P-T.


AP-Mushroom, Q-Maize plant, R-Rat, S-Snake, T-Kite
BP-Mushroom, Q-Rat, R-Snake, S-Kite, T-Maize plant
CP-Wheat plant, Q-Rat, R-Snake, S-Kite, T-Mushroom
DP-Maize plant, Q-Mushroom, R-Snake, S-Rat, T-Kite

Identify plants P, Q and R and select the correct statement regarding them.

(i) In plant Q, stomata are present only on the upper surface of the leaves.
(ii) Duckweed and water lettuce are other examples of Q type of plant.
(iii) The leaves of plant R do not have stomata.
(iv) Roots of plant P are fixed at the bottom of the pond.

A(i) and (iv) only
B(ii) and (iii) only
C(i) and (iii) only
D(i), (ii) and (iii) only

The shadow of a pole cast at some time of the day, is shown here.
Which of the following activities would Sukriti most probably be doing at this time?


AGoing for her evening walk
BReturning home from school
CEating her breakfast
DEating her dinner

A student concludes that the material in a round bowl is liquid. Which statement about the material must be true?

AThe material is clear.
BThe material weighs 1 kg.
CThe material has a temperature of 35°C.
DThe material takes the shape of its container.