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Explain the structure of the transparent and bulging part of the sclera. Also, where is it found?

The sclera is the white layer of the eye. In the central region, it is transparent and is called the cornea. The sclera comprises three... View Article

Express each of the following numbers as the sum of three odd primes: (a) 21 (b) 31 (c) 53 (d) 61

A prime number is a positive integer having exactly two factors. If p is a prime, then its only factors are necessarily 1 and p itself. Except... View Article

Name the planets having rings around them? i) Saturn ii) Jupiter iii) Uranus iv) All of the above

All of the above Saturn is the sixth planet from the Sun and the second-largest planet in our solar system. Saturn is a gas-giant planet... View Article

Which of the following is a primary activity? i) Mining ii) Agriculture iii) Banking iv) Quarrying

Banking is not a primary activity. It is the tertiary activity.... View Article

Find the product using suitable properties: (a) 738 x 103 (b) 854 x102 (c) 258 x 1008 (d) 1005 x168

Answer: We can determine the product of a given set of numbers by the Distributive Property. Distributive Property states that ” when a factor... View Article

Identify homogeneous mixtures from the following. i) Soda water ii) Brass iii) Air iv) Soap solution

The correct option ii) Brass. Brass is a homogeneous mixture of two metals and cannot be separated into components by physical methods. A... View Article

List five rational numbers between: (a) -1 and 0 (b) -2 and -1 (c) -4/5 and -2/3 (d) -1/2 and 2/3

(a) Rational numbers between -1 and 0: (-1/1) and (0/1) Since we need 5 numbers, multiply both the numerator and the denominator by 6. After... View Article

Helium atom has an atomic mass of 4 u and two protons in its nucleus. How many neutrons does it have?

Answer: The mass of an atom is the sum of the masses of protons and neutrons present in its nucleus. The atomic mass of Helium = 4 u No. of... View Article

Prepare a table having two columns depicting names of endocrine glands and hormones secreted by them.

Endocrine gland Hormones Testis Testosterone Ovary Oestrogen Thyroid Thyroxine Adrenal Adrenaline Pancreas Insulin Pituitary... View Article

Red soil is mainly found in the: i) Jammu and Kashmir ii) Rajasthan iii) Punjab iv) None of the above

None of these Red soils, along with their minor groups, form the largest soil group of India. The texture of these soils can vary from... View Article

Which organisms are called primitive and how are they different from the so-called advanced organisms?

An organism which has a simple body structure and ancient body design or features that have not changed much over a period of time is called... View Article

Identify the solutions among the following mixtures. (1) Soil (2) Seawater (3) Air (4) Coal (5) Soda water

Answer: (2) Seawater, (3) Air and (5) Soda water A solution is a homogeneous mixture of two or more components with a smaller size than 1... View Article

Select non-conductors of electricity from the following: i) Water ii) Pure water iii) Rubber iv) Paper

Pure water, paper and rubber are non-conductors of electricity. Electrical conductors are materials that conduct electricity, and insulators... View Article

The reproductive part of a plant is the – (a) leaf (b) stem (c)root (d) flower

Correct Option: D- Flower. The reproductive part of a plant is the flower. Flowers are collections of reproductive and sterile tissue arranged... View Article

Write down the measure of: (a) Some acute angles (b) Some obtuse angles (give at least two examples of each)

An acute angles an angle whose measure ranges from 0° to 90° and is lesser than 90° An obtuse angle is an angle whose measure is greater than... View Article

The device used for producing electric current is called a A) generator B) galvanometer C) ammeter D) motor

A) generator It’s a device that receives mechanical energy from an external source and converts it to electrical energy. Earlier generators... View Article

The major physical divisions of India include: i) Himalayas ii) Northern plains iii) Desert iv) All of these

All of the above The northernmost landscape of the country highlights the young and structurally folded mountain It stretches across... View Article

Can you think of reasons why more complex organisms cannot give rise to new individuals through regeneration?

Regeneration happens through mitosis and a particular type of tissue can give rise to its own kind only. In complex organisms, different tissues... View Article

Which scientist does not belong to Germany? i) Ernst Chain ii) Albert Einstein iii) Carl Bosch iv) Niels Bohr

Niels Bohr belongs to Denmark Niels Bohr was one of the foremost scientists of modern physics, best known for his substantial contributions to... View Article

Give the names of two energy sources that you would consider to be exhaustible. Give reasons for your choices.

Two exhaustible energy sources are as follows: Coal: It is produced from the dead remains of plants and animals buried under the earth's... View Article

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