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Which of the following statements are correct?
(i) The shape of a shadow depends on the position of the source of light.
(ii) A plane mirror can change the direction of light falling on it.
(iii) A pinhole camera forms an erect image of an object on a screen.
(iv) A shadow is formed when light passes through a transparent object.

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

At my farmhouse I am facing East, then I turn left and walk 10 metres. I again turn right and walk 5 metres. Again I go 5 metres towards the South, and from there walk 5 metres towards the West. In which direction am I from my farmhouse?

AEast
BWest
CNorth
DSouth

Which of the following statements are incorrect?
I. Mixture of kidney beans and chick peas can be separated by winnowing.
II. Salt from sea water can be obtained on a large scale by evaporation.
III. An alloy is a homogeneous mixture of a metal with another metal or nonmetals.
IV. Seeds of wheat can be separated from a bundle of wheat stalks by sieving.

AII and III only
BI and IV only
CI, III and IV only
DNone of these

Read the given relationships and select the option that will correctly complete them.
I. Madar : Wind :: ___P___ : Explosion
II. Wheat : Rabi crop :: ___Q___ : Kharif crop
III. Rice : Clayey soil :: ___R____ : Sandy soil

Farheen was practising outside the school with her basketball team when she saw a storm and lightning in the sky with dark clouds. She predicts that, it is going to rain soon. The safest thing for the team to do is to _____.

AKeep practising, but stop if it starts raining too hard
BKeep practising, but listen to the radio for the weather report
CStop practising, and stand under a tree until the storm passes away
DStop practising, and go inside a building until the storm passes away

A substance in gaseous form is being cooled to solid state. Its temperature will remain constant when the substance is
(i) in condensing phase
(ii) in freezing phase
(iii) at thermal equilibrium with the environment.

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

Each beaker given below contains two metal strips of same size fastened together and immersed in the salt solution of one metal as shown.



What is the reactivity of the metals?

AQ < P < R < S
BQ > P > S > R
CP > Q > R > S
DS > R > P > Q

The displacement-time graph of a body in motion is shown here. The corresponding velocity-time graph will be.


A
B
C
D

One of the four identical light bulbs in a series circuit has blown off as shown in the figure.

Which of the following statements is correct about the bulbs?

AZ will not glow while W, X and Y will glow as before.
BZ will not glow while W, X and Y will glow brighter than before.
CZ will glow brighter than before while W, X and Y will glow as before.
DNone of the bulbs will glow.

A spring is compressed between two toy carts of masses m₁ and m₂. When the toy carts are released then spring exerts equal and opposite average force on each for the same time t. Assume that there is no friction between the toy carts and the ground, the velocities of toy carts are

AIn opposite directions but in inverse ratio of their masses
BIn opposite directions but in direct ratio of their masses
CEqual and in opposite direction
DEqual and in same direction.