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Dharini took two healthy green plants of equal size, put them in two boxes, L and M, made of different materials and placed them under the Sun, as shown in the figures. She watered both the plants daily, but the plant in set-up M died, while the plant in set-up L grew well. Which of the following best describes this?


APlant in the set-up M could not get air.
BBox in the set-up M is made up of clear glass.
CPlant in the set-up M could not get sunlight.
DBox in the set-up L is made up of wood.

X is the farthest planet from the Sun in our Solar System. ‘X’ is ___________.

A Neptune
B Uranus
C Jupiter
D Saturn

The picture shows a xylophone. A, B, C and D are the rods in it. Which of the following rods has high pitch of the sound and which has low frequency of vibrations?

As we go higher up on mountains, our ears pop because

A Air pressure around our ears increases
B The pressure exerted by the blood near ears increases
C Air pressure around our ears decreases
D None of these

Which of the following represents the correct increasing order of the densities of given substances?

A Cotton < Exhaust from chimneys > Honey < Iron < Air
B Air < Exhaust from chimneys < Cotton < Honey < Iron
C Cotton < Air < Exhaust from chimneys < Iron < Honey
D Air < Cotton < Exhaust from chimneys < Iron < Honey

Which of the following statements are correct?
(i) Cochineal insect is used to eliminate Opuntia.
(ii) Water logging decreases the amount of salts in the soil that increases soil fertility.
(iii) Fertilisers are not readily soluble in water, so they are absorbed by the plants slowly.
(iv) Rust of wheat is a fungal disease.
(v) The practice of growing two or more dissimilar crops in the same field one after the other is called mixed cropping.

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

Crop plants may be attacked by pests which affect the crop production. Fungi are such type of pests which cause diseases like

A Smut of wheat
B Citrus canker
C Blight of potato
D Both (A) and (C).

Which of the following is not the correct difference between weaving and knitting?

AWeaving is done by machine while knitting is done by hands only.
BWeaving uses one yarn while knitting uses two sets of yarn.
CWeaving is done for silk only while knitting is done for wool only.
DAll of these

Which of the following statements are incorrect?
I. A bag placed below the seat of a moving bus is in motion with respect to the floor of the bus.
II. While measuring length of an object using a metre scale, use the zero-mark even if the ends are worn out.
III. Blinking of eyes is an example of oscillatory motion.
IV. If a body as a whole moves around in a circular path, the motion is known as revolution.

AI, II and IV only
BI, II and III only
CII, III and IV only
DI, III and IV only

Observe the two shallow dishes kept in the sun carefully containing equal amount of water.



After few hours, in which dish will the water level not come down?

ADish 1
BDish 2
CIn both dishes water level will not come down.
DIn both dishes water level will come down.