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Select the incorrect statement from the following.

AArteries carry oxygenated blood.
BVeins have valves to prevent backflow of blood.
CBlood helps in regulating body temperature.
DPlatelets destroy the germs which have entered the body and help to fight infection.

With respect to ovary which of the following options is correct?

AIt develops into seeds after pollination.
B It develops into fruit after pollination.
CIt develops into seeds after fertilisation.
DIt develops into fruit after fertilisation.

Read the following information carefully and answer the question given below:
(i) A, B, C, D, E F and G are sitting around a circle facing the centre.
(ii) G is second to the left of C, who is to the immediate left of F.
(iii) A is third to the left of E.
(iv) B is between D and E.

Which of the following is false?

AA is fourth to the right of E.
BG is to the immediate right of D.
CF is third to the right of D.
DB is to the immediate left of D.

Consider the following figures 1 and 2. In figure 1, the mass of the body A in air is 0.2 kg. The mass of the water container (with water in it) is 0.5 kg. In figure 2, when A is completely immersed in the water of the container B, the readings of the respective balances change as shown.

What is the value of X?

A 0.55 kg
B 0.15 kg
C 0.3 kg
D 0.45 kg

If the following numbers are arranged in the ascending order, what will be the middle digit of the middle number?

428, 396, 523, 983, 465

A2
B6
C8
D9

The given figure shows the ultrastructure of a plant cell.


Which of the following statements are correct for parts marked as P and Q.
(i) Part Q helps in osmoregulation.
(ii) Cellular respiration occurs in part P.
(iii) Part P is lined by single membrane.
(iv) Part Q is found only in plant cells.

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

How many such pairs of letters are there in the word CLEARING each of which has two letters between them in the word as also in the alphabet?

ANil
BOne
CTwo
DNone of these

Study the given flow chart carefully.


Cotton and metal are represented by the letters and respectively.

AP, Q
BQ, R
CQ, S
DR, S

Find the missing number, if a certain rule is followed row-wise or column-wise.


A200
B29
C120
D180

When a soft drink bottle is opened, there is sudden occurrence of effervescences. Why?

AGas moves from low atmospheric pressure to high atmospheric pressure
BThere is pressure difference inside and outside
CIt is a tendency of CO₂ gas to expand
DAll of these