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Refer to the given dichotomous key and select the correct option.
I. (A) It is categorised as energy giving food. – Go to II
(B) It is categorised as protective food. – Go to III
II. (A) It is soluble in water. –
(B) It is insoluble in water. –
III. (A) It is needed for clotting of blood. –
(B) It helps in formation of haemoglobin. –

A Q could be glucose which is instant source of energy.
B Deficiency of S causes anaemia characterised by pale body colour, body fatigue etc.
C R causes osteoporosis in adults while S causes goitre in adults.
D P occurs in the cell wall of plant cells and in fibres.

A child is suffering from a deficiency disease. He shows the following symptoms:
(i) Swelling of ankle, feet and belly
(ii) Diarrhoea
(iii) Scaly skin
(iv) Mental retardation
Identify the deficiency disease and the deficient nutrient in the child’s body.

Position - time graph of an object is shown in the figure.

Object moves with constant speed for path______.

APQ
BQR
CRS
DST

If '-' stands for 'division', '+' stands for 'multiplication','÷' stands for 'subtraction' and '×' stands for 'addition', then which one of the following options is incorrect?

A2 × 5 × 6 + 3 ÷ 2 = 23
B2 × 5 + 6 - 3 ÷ 2 = 10
C2 - 5 ÷ 6 × 3 - 2 = 23
D2 ÷ 5 + 6 - 3 + 2 = -18

Two fixed point masses of 10 kg and 20 kg are located at (0 m, 0 m) and (5 m, 0 m). Where should a third point mass of 30 kg be kept so that the net force of attraction on 30 kg mass due to point masses 10 kg and 20 kg is zero?

A At 2.05 m from 10 kg mass
B At 2.05 m from 20 kg mass
C At 2.95 m from 10 kg mass
D At 3 m from 20 kg mass

Select the correct option which represents a lizard.

Refer the different appearances of the Moon, over a month across the sky and answer the questions that follow.
1. Which appearances shown in the above diagram are incorrect?
2. If young crescent appears at 14^th Nov. 20XX, then when old crescent is expected to appear?
(a) 1-First quarter, Old crescent 2-5^th Dec. 20XX
(b) 1-Young crescent, Last quarter 2-28^th Nov. 20XX
(c) 1-Full Moon, New Moon 2-24^th Nov. 20XX
(d) 1-Young crescent, Full Moon 2-1^st Dec. 20XX

Following is a random sequence of steps in the processing of wool. Arrange these steps in the correct sequence and select the correct option.

(i) Scouring (ii) Sorting (iii) Shearing (iv) Removing burrs (v) Dyeing
(vi) Yarn (vii) Spinning (viii) Weaving (ix) Fabric (x) Carding

A (iii) → (i) → (ii) → (iv) → (x) → (v) → (vii) → (vi) → (viii) → (ix)
B (iii) → (ii) → (i) → (iv) → (v) → (x) → (vii) → (vi) → (viii) → (ix)
C (iii) → (ii) → (i) → (iv) → (x) → (v) → (vii) → (vi) → (viii) → (ix)
D (iii) → (i) → (iv) → (ii) → (v) → (x) → (vii) → (vi) → (viii) → (ix)

Consider the following statements (i-iv) and select the option that correctly identifies true (T) and false (F) ones.

(i) Silk is a cellulosic fibre.
(ii) The hair on a sheep’s body is called fleece.
(iii) Silk fabric was first developed in ancient China.
(iv) Cashmere is an extremely soft wool obtained from Cashmere sheep.

Analyse the situation shown in the figure and select the correct option.


AWind will blow from P to Q if P is water body.
BWind will blow from Q to P if P is water body.
CWind will blow both sides from P to Q and Q to P if P is water body.
DWind will blow both sides from P to Q and Q to P if Q is water body.