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Which storm moves quickly in a narrow path and has rotating winds upto 300 miles per hour that kick up a cloud of dirt and debris?

(A) Hurricane

(B) Thunderstorm

(C) Tornado

Riya performed an experiment as shown below.

Select the correct option regarding it.

A X could be common salt, Y could be sugar and Z could be water.
B If Y is sugar and Z is water then Y can be recovered by evaporating Z.
C Both X and Y are insoluble in solvent Z.
D X is a liquid whereas Y is a solid.

Which of the following statements is/are correct regarding different kinds of soils?
(i) Sandy soil is dry and light and it holds a lot of air and water.
(ii) Loamy soil is a mixture of sand and clay and is good for growing plants.
(iii) Clayey soil is formed of very fine particles and hence does not hold much of water.
(iv) Small stones and pebbles present in soil are called gravel.

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

The displacement distance graph of a sound wave is shown in the figure. Which point has the maximum pressure?


A I
B II
C III
D IV

The given table shows the degree of angular movement shown by three different skeletal joints X, Y and Z.

Which of the following statements is correct regarding this?

(A) Joint X can be the joint between shoulder bone and arm.

(B) Joint Y can be the elbow joint.

(C) Joint Z can be the joint between upper jaw and rest of the skull.

Light rays undergo regular reflection at ________.

(A) A piece of cloth

(B) The Moon surface

(C) A whitewashed wall

In an experiment, hydrochloric acid was reacted with calcium carbonate at room temperature and pressure. If 80 cm³ of gas X was produced then, the number of molecules and mass of gas X given off are respectively


A 3.33 × 10^-3, 0.5 g
B 2.15 × 10²¹, 0.157 g
C 6 × 10²³, 7.5 g
D 4 × 10²¹, 1.5 g

Study the given Venn diagram.

Following statements represent the causes of different kinds of pollution. Which of the following statements hold true for the given Venn diagram?
(i) Factory discharge coming out of a chimney can be included in R.
(ii) Construction work going on at a building site can be included in Q.
(iii) Youngsters dancing in a disco can be included in O.
(iv) Vehicles moving on roads can be included in O.

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

The number of 'molars' in each jaw is ________.

(A) Twelve

(B) Six

(C) Eight

P is the state of matter that changes into state Q on cooling and changes into state R on heating. Select the option that correctly identifies the character of P, Q and R.