Q.1. A student soaked 5g of raisins in beaker A containing 25ml of ice chilled water and another 5g

of raisins in beaker B containing 25ml of tap water at room temperature. After one hour, the student
observed that
(a) water absorbed by raisins in beaker A was more than that absorbed by raisins in beaker B 132
(b) water absorbed by raisins in beaker B was more than that absorbed by raisins in beaker A
(c) the amount of water absorbed by the raisins of both beakers A and B was equal.
(d) No water was absorbed by raisins in either of the beakers A and B
Q.2. When a stopper of a bottle containing a colourless liquid was removed, the bottle gave out a
smell like that of vinegar. The liquid in the bottle could be
a) Hydrochloric acid solution b) sodium hydroxide solution
c) Acetic acid d) saturated sodium bicarbonate
Q.3. In amoeba, asexual reproduction by multiple fission
a) never take place
b) sometimes takes place
c) take place when amoeba wishes
d) take place during unfavorable environment conditions
Q.4.For determining the percentage of water absorbed by raisins in a given time, apart from water,
raisins and a watch, we shall also require
(a) a beaker, a graduated cylinder, a thermometer ,a filter paper.
(b) a watch glass, a graduated cylinder, a thermometer, a weighing balance.
(c) a beaker, a thermometer, a filter paper, a weighing balance.
(d) a graduated cylinder, a thermometer, a weighing balance.
Q.5. The inner surface of a stainless steel spoon behaves as__________.
(a) concave mirror.
(b) convex mirror.
(c) plane mirror
(d) neither concave nor convex
Q.6. A student obtains a blurred image of an object on a screen by using a concave mirror. In order to
obtain a sharp image on the screen, he will have to shift the mirror
(a) towards the screen
(b) away from screen
(c) either towards or away from screen, depending upon the position of the object
(d) to a position very far away from the screen
Q.7. In an experiment to determine the focal length of a convex lens, a student obtained a sharp
inverted image of a distant tree on the screen behind the lens. She then removed the screen and looked
through the lens in the direction of the object. She will see
(a) an inverted image of the tree at the focus of the lens
(b) no image as the screen has been removed
(c) a blurred image on the wall of the lab
(d) an erect image of the tree on the lens
Q.8. A student is to find the focal length of a (i) concave mirror, (ii) convex lens by using a distant
object. He will observe that the screen is on the same side as the object
(a) in both cases
(b) in neither of the two cases
(c) in case(i) but not in case(ii)
(d) in case (ii) but not in case(i)
Q.9. A student suggested the following Guidelines to his friend for doing the experiment on dressing
the path of a ray of a light, passing through a rectangular slab, for three different angles of incidence:
A) Draw outline of the glass slab at three positions on the drawing sheet.
B) Draw normal on the top side of these outlines near their left end
C) Draw the incident rays on the three outlines in direction, making angles of 30
, 45
, 60
with the
normal drawn
D) Fix two pins vertically on each of these incident rays at two points nearly 1 cm apart.133
E) Look for the images of the feet of these pins while fixing two pins, from other side, to get the
refracted ray
When he showed these guidelines to his teacher, the teacher told him that two of them need to be
corrected and modified. These two Guidelines are
(a) B & C
(b) C & D
(c) D & E
(d) B & D

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