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Trees are planted along the roadside to reduce pollution from motor vehicles. How do trees help to reduce pollution?
(i) They absorb traffic noise.
(ii) They take in carbon dioxide.
(iii) They trap dust and soot from the exhaust pipes of vehicles.

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

In a certain code language, 'ring' is called 'bangle', 'bangle' is called 'earring', 'earring' is called 'necklace' and 'necklace' is called 'nail paint'. Which of the following is wear in finger?

Aring
Bbangle
Cearring
Dnecklace

A train starting from rest at one station, accelerates uniformly and attains a speed v after sometime. After travelling at this speed for sometime, it retards uniformly and stops at the next station. If R be the uniform resistance of the given track and the duration of the uniform motion is just half the total journey time, the average power supplied by the train engine is

A
B
C
D

Study the given Venn diagram.

Which letters in the Venn diagram represent solid, liquid and gas?

During the formation of rain, when water vapour changes back to liquid in the form of rain drops_______.

AHeat is absorbed
BHeat is released
CHeat is first absorbed and then released
DThere is no exchange of heat

Read the given statements and select the option that correctly identifies them as true (T) and false (F) ones.
I. Downy mildew in plants is caused by fungi.
II. Chlamydomonas and Fucus are unicellular algae whereas Polysiphonia and diatoms are multicellular.
III. Virus contains both DNA and RNA as genetic material.
IV. Citrus canker is a bacterial disease that is highly contagious.

A
B
C
D

The diagram shows the front view of the circuit board.

There are wires connected behind the circuit board which allow the bulb to light up. Which are the possible circuit points?

ATQ and QR
BTR and SR
CPQ and TS
DPT and TS

Given figure shows a measuring cylinder (in cm³) before and after the immersion of an irregular solid object. The volume of the object is


A 82 cm³
B 12 cm³
C 30 cm³
D 18 cm³

Match each item of column I with columns II and III and select the correct option.

While going to his office P meets a man Q who is related to P, because P has R, a son, who is married to T. T is the daughter of Q. T has a daughter a. How is P related to A?

AGrandfather
BGrandmother
CUncle
DFather-in-law