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We can distinguish between the musical sounds produced by different singers on the basis of the characteristic of sound called :

[11] Sound
Chapter: [11] Sound
Concept: undefined >> undefined

At 20°C, the minimum distance of a person from a sound reflecting surface to hear an echo is :

[11] Sound
Chapter: [11] Sound
Concept: undefined >> undefined

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What is tissue?

[6] Tissues
Chapter: [6] Tissues
Concept: undefined >> undefined

What is the utility of tissues in multi-cellular organisms?

[6] Tissues
Chapter: [6] Tissues
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Seema visited a Natural Gas Compressing Unit and found that the gas can be liquefied under specific conditions of temperature and pressure. While sharing her experience with friends she got confused. Help her to identify the correct set of conditions

[1] Matter in Our Surroundings
Chapter: [1] Matter in Our Surroundings
Concept: undefined >> undefined

Seema visited a Natural Gas Compressing Unit and found that the gas can be liquefied under specific conditions of temperature and pressure. While sharing her experience with friends she got confused. Help her to identify the correct set of conditions

[2] Is Matter Around Us Pure
Chapter: [2] Is Matter Around Us Pure
Concept: undefined >> undefined

Match the physical quantities given in column A to their S I units given in column B:

(A) (B)
(a) Pressure (i) cubic metre
(b) Temperature (ii) kilogram
(c) Density (iii) pascal
(d) Mass (iv) kelvin
(e) Volume (v) kilogram per cubic metre
[1] Matter in Our Surroundings
Chapter: [1] Matter in Our Surroundings
Concept: undefined >> undefined

Match the physical quantities given in column A to their S I units given in column B:

(A) (B)
(a) Pressure (i) cubic metre
(b) Temperature (ii) kilogram
(c) Density (iii) pascal
(d) Mass (iv) kelvin
(e) Volume (v) kilogram per cubic metre
[2] Is Matter Around Us Pure
Chapter: [2] Is Matter Around Us Pure
Concept: undefined >> undefined

The non S I and S I units of some physical  quantities are given in column A and column B respectively. Match the units belonging to the same physical quantity: 

(A) (B)
(a) degree celsius (i) kilogram
(b) centimetre (ii) pascal
(c) gram per centimetre cube (iii) metre
(d)  bar (iv) kelvin
(e) milligram (v)  kilogram per metre cube
[1] Matter in Our Surroundings
Chapter: [1] Matter in Our Surroundings
Concept: undefined >> undefined

The non S I and S I units of some physical  quantities are given in column A and column B respectively. Match the units belonging to the same physical quantity: 

(A) (B)
(a) degree celsius (i) kilogram
(b) centimetre (ii) pascal
(c) gram per centimetre cube (iii) metre
(d)  bar (iv) kelvin
(e) milligram (v)  kilogram per metre cube
[2] Is Matter Around Us Pure
Chapter: [2] Is Matter Around Us Pure
Concept: undefined >> undefined

You want to wear your favourite shirt to a party, but the problem is that it is still wet after a wash. What steps would you take to dry it faster?

[1] Matter in Our Surroundings
Chapter: [1] Matter in Our Surroundings
Concept: undefined >> undefined

You want to wear your favourite shirt to a party, but the problem is that it is still wet after a wash. What steps would you take to dry it faster?

[2] Is Matter Around Us Pure
Chapter: [2] Is Matter Around Us Pure
Concept: undefined >> undefined

Rusting of an article made up of iron is called

[1] Matter in Our Surroundings
Chapter: [1] Matter in Our Surroundings
Concept: undefined >> undefined

Rusting of an article made up of iron is called

[2] Is Matter Around Us Pure
Chapter: [2] Is Matter Around Us Pure
Concept: undefined >> undefined

Which of the following statements is not true about an atom?

[3] Atoms and Molecules
Chapter: [3] Atoms and Molecules
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3.42 g of sucrose are dissolved in 18g of water in a beaker. The number of oxygen atoms in the solution are

[3] Atoms and Molecules
Chapter: [3] Atoms and Molecules
Concept: undefined >> undefined

In this crossword puzzle, the names of 11 elements are hidden. Symbols of these are given below. Complete the puzzle.

1 Cl
2 H
3 Ar
4 O
5 Xe
6 N
7 He
8 F
9 Kr
10 Rn
11 Ne

Identify the total number of inert gases, their names, and symbols from this crossword puzzle.

[3] Atoms and Molecules
Chapter: [3] Atoms and Molecules
Concept: undefined >> undefined

In photosynthesis, 6 molecules of carbon dioxide combine with an equal number of water molecules through a complex series of reactions to give a molecule of glucose having a molecular formula C6 H12 O6 . How many grams of water would be required to produce 18 g of glucose? Compute the volume of water so consumed assuming the density of water to be 1 g cm–3.

[3] Atoms and Molecules
Chapter: [3] Atoms and Molecules
Concept: undefined >> undefined

Which of the following tissues has dead cells?

[6] Tissues
Chapter: [6] Tissues
Concept: undefined >> undefined

A particle is moving in a circular path of radius r. The displacement after half a circle would be:

[7] Motion
Chapter: [7] Motion
Concept: undefined >> undefined
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