User Forum

Read the given statements and select the correct option.
Statement 1 : If a light body and a heavy body possess the same momentum, the lighter body will possess more kinetic energy.
Statement 2 : The kinetic energy of a body varies as the square of its velocity.

A Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
C Statement 1 is true but statement 2 is false.
D Both statements 1 and 2 are false.

The ash which is collected after burning of magnesium ribbon is dissolved in water to give a solution X. What is the nature of the solution X when it is tested with indicators?

A It turns blue litmus red and phenolphthalein pink, hence it is an acidic solution.
B It turns red litmus blue and phenolphthalein pink, hence it is a basic solution.
C It turns blue litmus red and gives no colour with phenolphthalein, hence it is an acidic solution.
D It does not change colour of red or blue litmus and phenolphthalein, hence it is a neutral solution.

Look at the groups given below carefully.

An animal, 'P', can be placed in both groups. Which of the following animals could 'P' be?

AKoala
BPig
CDeer
DCow

The distance-time graph of a motorcycle is shown in the figure. When was the motorcycle travelling at a speed of 2 m s^-1?


A2.5 s
B5.0 s
C8.0 s
D10.5 s

Refer to the given relationship based on body coverings.

Select the option which satisfies the same relationship.

ASnake : Arctic fox : Heron
BArmadillo : Dolphin : Hedgehog
CFrog : Seal : Rhinoceros
DEmu : Seahorse : Spiny anteater

Refer to the given figure and select the correct option.



AJoint X is similar to joint Y whereas joint W is similar to joint Z.
BJoints U and V are fixed joints where bones do not show movement.
CJoints Y and Z allow movement in only one plane, i.e., either back and forth or up and down.
DNone of these

Match the given chemical reactions with the products listed in the box and select the correct option from the given codes.


P. Mixing magnesium oxide with water
Q. Brown deposit on iron nail kept in copper sulphate solution
R. Carbon dioxide is passed through lime water
S. Absorption of ultraviolet radiations by ozone.

AP-(v), Q-(vii), R-(i), S-(vi)
BP-(iv), Q-(ii), R-(i), S-(iii)
CP-(ii), Q-(iii), R-(viii), S-(vii)
DP-(ii), Q-(iv), R-(viii), S-(vi)

Priyanka sprayed 2 pieces of bread with water and put each into a plastic bag. She sealed the bags tightly. Then she put one bag into the freezer and the other was left on a table near the kitchen window. 5 days later, she took the bag out of the freezer and compared it to the one on the table. The given figure shows what she saw.

Which of the following was Priyanka trying to find out ?

AMould requires air to grow.
BMould requires dryness to grow.
CMould requires water to grow.
DMould requires warmth to grow.

The given figure shows a heavy block of mass M kept on a frictionless surface and being pulled by two ropes of equal mass m. At t = 5 s, the force on the left rope is withdrawn but the force on the right end continues to act. Find the magnitude of the force by the right rope on the block.


A
B
C
D

Number of birds on the tree are _____________.


A4
B5
C3
D2