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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

Sania had to prepare a list of voluntary actions of body. By mistake, she wrote some involuntary actions also in the list. Pick out the involuntary actions from the list prepared by Sania, shown below.
(i) Chewing food
(ii) Sitting upright on a table
(iii) Digestion of food
(iv) Beating of heart
(v) Singing a song
(vi) Dancing
(vii) Breathing

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

Refer to the given graph and identify X, Y, and Z.

Now, select the option that incorrectly matches the habitat with the type of adaptation shown by organisms inhabiting them.