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Which of the following statements are correct about planet Venus?
(i) It rotates from west to east while the Earth rotates from east to west.
(ii) It shows phases just like the Moon.
(iii) It appears in the eastern sky before sunrise and in the western sky just after sunset.
(iv) It has no satellite of its own.
(v) It is the second brightest star in the night sky.

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

Ravi set up an experiment as shown below.

Which of the following holds true regarding set ups P and Q?

AIn set up P, the solution inside Visking tubing will become blue black at step II as all the starch is converted to simple sugars.
BIn set up Q, the solution inside Visking tubing will become blue black at step II as starch is not digested at all.
CIn set up P, the solution inside Visking tubing will become blue black at step II as starch is not digested by boiled amylase.
DIn set up Q, the solution inside Visking tubing will become blue black at step II as all the starch is converted to simple sugars by amylase.

Rati placed 3 gm each of food W, X, Y and Z in digestive juices E and F for 3 hours. After 3 hours, she recorded the amount of undigested food left in each digestive juice and plotted the graphs as shown below.

Based on the information deduced from the given graphs :
(i) Which of these foods W, X, Y and Z is rich in dietary fibres?
(ii) If digestive juice E is from saliva then which component in the given foods W, X, Y and Z is being digested?

A(i) - Z, (ii) - Starch
B(i) - W, (ii) - Starch
C(i) - Y, (ii) - Fats
D(i) - W, (ii) - Fats

Refer to the given food web. If all the F organisms are killed, which one of the following will happen?


AE would have to find new sources of food.
BZ would have more competitors for food.
CE would decrease in number.
DZ would eat more of E and G.

Rohan flicked the same coin with equal force on three different surfaces X, Y and Z. The distance travelled by the coin on different surfaces in one stroke is tabulated as shown.


Now, select the correct option regarding it.

A X could be glass and Z could be cardboard.
B Y could be cardboard and Z could be polished plane mirror surface.
C X could be laminated plastic sheet and Y could be sandpaper.
D X could be marble floor and Z could be jute mat.

Liquids and gaseous fuels have more advantages over solid fuels. Some of the advantages are
(i) Calorific value of liquid and gaseous fuels is higher than the solid fuels.
(ii) Liquids and gaseous fuels have higher ignition temperatures than the solid fuels.
(iii) Liquids and gaseous fuels are easier to store since solid fuels occupy lot of space.
(iv) Liquids and gaseous fuels burn completely, leaving no residue.
The correct advantages are

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

Refer to the given figure of human digestive system.

In which of the labelled parts no digestion of food takes place?

A P and S only
B Q and R only
C P only
D S only

Which one of the following questions could all these pupils answer?

(A) Is the orchid purple or blue?

(B) Is the watch ticking or not?

(C) Is the coffee cold or hot?

Three different positions of a dice are shown below. Which number is opposite to number 1 ?

(a) 3
(b) 2
(c) 6
(d) 5