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Refer to the given word grid and answer the following questions.

How many of these fibres are obtained from animals?

A Two
B Five
C Six
D One

The given diagram shows three different ways that a sugar cube can undergo a physical change. Which characteristic of the sugar cube does not change?

(A) Shape

(B) State

(C) Weight

(A) 2

(B) 3

(C) 4

Rahul gets an assignment to make a list of fabrics made of different fibres. He takes pieces of fabric X and Y and burns them to identify the fibre. Fibre X burns with smell of charred meat and fibre Y burns with smell of burning hair. Identify the fabrics X and Y.

A
B
C
D

Digit at the tens place in the number that comes as a difference between 5 hundreds 6 tens 13 ones and 7 hundreds 2 tens 15 ones is _________.

(A) 7

(B) 6

(C) 5

Two satellites S₁ and S₂ revolve around a planet in coplanar circular orbits in the same sense. Their periods of revolution are 1 h and 8 h respectively. The radius of the orbit of S₁ is 10⁴ km. When S₂ is closest to S₁, then the speed of S₂ relative to S₁ will be

Aπ × 10⁴ km h^-1
B2π × 10⁴ km h^-1
C1 × 10⁴ km h^-1
D2 × 10⁴ km h^-1

Choose the correct graph representing different values of resistances for wires made from different materials.


A
B
C
D

          (i)---------(ii)-------(iii)
ATrue------False-----True

BFalse-----True------False

CFalse-----True------True

DTrue------True------False

A fixed volume of water will dissolve a certain amount of salt. If the same volume of water is then heated, more salt can be made to dissolve in it. The best explanation to this is________.

AHeating increases the spaces between the water molecules
BHeating reduces the size of the salt particles
CSalt melts in hot water
DBoth water and salt particles become smaller when heated

During the process of inhalation in human beings _________.

(A) Diaphragm contracts but external intercoastal muscles and lungs expand.

(B) Diaphragm expands but external intercoastal muscles and lungs contract.

(C) Diaphragm and external intercoastal muscles expand but lungs contract.