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Why silver turns into black after a long time? Give the reason.

When silver materials are exposed to air, silver reacts with sulphur present in the atmosphere and forms a black layer of silver sulphide on the... View Article

The Himalayas is an example of a) Ancient mountains b) Fold mountains c) Residual mountains d) Block mountains

Option a) Sister. Mother's husband is your father. Your father's sister is your aunt and is the man's aunt. Hence, the man and the lady must be... View Article

A man said to a lady “Your mother’s husband’s sister is my aunt.” How is the lady related to the man? a) Sister b) Daughter c) Mother d) Grand-daughter

Option a) Sister. Mother's husband is your father. Your father's sister is your aunt and is the man's aunt. Hence, the man and the lady must be... View Article

Which of the following performs photosynthesis and manufactures food in cactus plant a) Leaves b) Roots c) Stems d) All of the above

Option c) Stems. In the cactus, leaves are reduced to spines in order to reduce the rate of transpiration.... View Article

Pollen grains of pinus are a) Non-saccate b) Trisaccate c) Monosaccate d) Bisaccate

Option d) Bisaccate. Bisaccate is charchterised with two little bags, sacs, or pouches.... View Article

Parkinsonia is a good example of (a) winged fruit (b) phyllode (c) parachute mechanism (d) phylloclade

Option (b) phyllode. Parkinsonia is a good example of phyllode.... View Article

Mitoplast is a) Granum less chloroplast b) Well developed nucleus c) Outer membrane with fewer mitochondria d) Outer membrane with less chloroplast

Option c) Outer membrane with fewer mitochondria. When the outer membrane is absent or less in mitochondria it is known as mitoplast.... View Article

The Centre of gravity of a rectangle will be at its: a) The intersection of its diagonal b) Centre c) Corners d) At its periphery

Option a) The intersection of its diagonal. The center of gravity of a rectangle, square, or parallelogram lies at the center point where its... View Article

Who constructed the Ibadat Khana

The Mughal Emperor Akbar in 1575 CE built Ibadat khana at Fatehpur Sikri. Ibadat Khana was built to gather spiritual leaders of different... View Article

Who is the author of the book glimpses of world history a) Rajiv Gandhi b) Mahatma Gandhi c) Indira Gandhi d) Jawaharlal Nehru

Option d) Jawaharlal Nehru.... View Article

State true or false: Zinc is very less malleable

True. Zinc is a bluish-white metal that becomes comparatively malleable above 100°C (212°F) temperatures. Malleable means capacity to be hammered... View Article

Who was the first medieval ruler to propound the divine theory of kingship

Ghiyasuddin Balban was the first medieval ruler to propound the divine theory of kingship. After the death of Nasiruddin Mahmud in 1266, he... View Article

How is the woman related to the man? a) Mother b) Aunt c) Niece d) Sister

Option c) Niece. Mother's mother is a grandmother; Grandmother's only son is maternal uncle. Hence the woman is the man's niece.... View Article

The trees were cut down last month. This is an example of ___________ passive voice.

Impersonal passive voice... View Article

Which function of management is considered as the base of all other functions?

Planning is the primary function of management. Planning helps to decide the objectives clearly and prepare a plan to execute the task.... View Article

The nuclear reaction that takes place in a nuclear reactor is __________. a) nuclear fusion reaction b) controlled fission reaction c) uncontrolled fission reaction d) none of the above

Option b) controlled fission reaction. The nuclear reaction that takes place in a nuclear reactor is a controlled fission reaction.... View Article

Black lung disease is common in a) Farmers b) Workers of petro-chemical industry c) Coal miners d) Refinery workers

Option c) Coal miners. Black lung disease known as pneumoconiosis is caused by the prolonged exposure to coal dust.... View Article

The Chhota Nagpur Plateau famous for its mineral deposits is in which state? a) Madhya Pradesh b) Orissa c) Jharkand d) Uttar Pradesh

Option c) Jharkand. The Chota Nagpur Plateau covers Jharkhand state and parts of Chhattisgarh, West Bengal, Bihar, and Odisha.... View Article

Number of linkage groups in drosophila are a) 2 b) 4 c) 6 d) 8

Option b) 4. The genes located on the same chromosome are known as linked genes.... View Article

What is the major component of soil a) Mineral matter b) Water c) Organic matter d) Air

Option a) Mineral matter. Soil contains 45% of mineral matter, 5% is organic matter, and the rest 50% water and air.... View Article

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