Science Quiz: Day 01

October 31, 2022

Limonitic ore is the ore of which metal?

(A) Iron
(B) Aluminium
(C) Zinc
(D) Cobalt

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Answer – A

_____ is a thyroid hormone which controls the balance of calcium in the body

(A) Calcitonin
(B) Thyroxine
(C) Calmodulin
(D) All of these

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Answer – A

The cell wall in plants is interrupted by narrow pores carrying fine strands of cytoplasm which interlink the contents of the cells. These strands are called –

(A) Plasmohole
(B) Microvilli
(C) Plasmodesmata
(D) Plasmalemma

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Answer – C

The outer most layer of the Sun is known as

(A) Corona
(B) Photosphere
(C) Chromosphere
(D) Granule

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Answer – A

The term Carbon Credit is associated with

(A) Coal reserve of a nation
(B) Reduction of Green House Gas emissions
(C) Fossil Fuel reserve
(D) Amount of CO2 an individual emits in a year

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Answer – C

Haematite ores is the ore of which metal?

(A) Iron
(B) Aluminium
(C) Zinc
(D) Cobalt

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Answer – A

Vertebrates have two endocrine glands associated with the brain, namely

(A) Thyroid, Thymus
(B) Pituitary, Pancreas
(C) Pituitary, Pineal
(D) Pancreas, Pineal

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Answer – C

The layer common to two adjacent plant cells called Middle Lamella is composed of

(A) Calcium Phosphate
(B) Calcium Sulphate
(C) Calcium Carbonate
(D) Calcium Pectate

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Answer – D

Algae often float on surface of water during day but sink during night due to:

(A) Evolution and trapping of oxygen bubbles during the day in their photosynthesis process
(B) Becoming light as they consume most of their food in the night
(C) Warming action of sun during the day
(D) Release of absorbed air by warming of water

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Answer – A

The reason of algae float to the surface during the day & sink at night is due to photosynthesis. In Day time, the algae is producing oxygen.
When enough Oxygen is produced during the day, it gets trapped in bubbles and it can lift the clumps up to the surface. In night, this oxygen is consumed and CO2 is produced. So algae sinks.

On which of the following statements, is the kinetic theory of matter base?

(A) Matter is made up of molecules
(B) Molecules are in rapid motion
(C) Molecules experience forces of attraction between one another
(D) All of the above

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Answer – C

When heated with chloroform, secondary amines and tertiary amines

(A) Gives isocyanides
(B) Gives cyanides
(C) Do not give isocyanides
(D) Both (a) and (b)

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Answer – B

Which one of the following statement regarding the sun is correct?

(A) The sun is composed mainly of hydrogen.
(B) Its energy is generated by nuclear collision in its interior
(C) It is calculated that the sun consumes about a trillion pounds of hydrogen every second
(D) All of the above

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Answer – D

Supersonic speed is speed greater than the speed of sound (in air at sea level) that is to say around______ miles/hour.

(A) 760
(B) 860
(C) 960
(D) 1060

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Answer – A

An aeroplane rises because -

(A) Of upward reaction of air.
(B) The density of air above the plane is less than below it.
(C) The pressure above its wings is less than the pressure below them
(D) Its nose points upwards

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Answer – C

The pioneer of Atomic energy in India is

(A) Homi J Bhabha
(B) Vikram Sarabhai
(C) C.V. Raman
(D) C.K. Naidu

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Answer – A

India tops the world in production of

(A) Aluminium
(B) Copper
(C) Chromite
(D) Mica

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Answer – D

DPT vaccine does not give protection to a child from

(A) Tetanus
(B) Polio
(C) Diphtheria
(D) Whooping Cough

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Answer – B

What will be the colour of a red rose when it is seen through green glass?

(A) White
(B) Black
(C) Pink
(D) Brown

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Answer – B

White light is composed of lights of different colours . A red flower appears red because it reflects the red light in white light and absorbes other colours of light
When a red rose is seen in green light, it absorbs the green light and the petals appear black(if no light is reflected it appears as black)as no light is reflected by the rose.
So if you look a red flower in any colour light except the white light or red light, it will look black.

Which one of the following crops enriches nitrogen content in the soil?

(A) Pea
(B) Sunflower
(C) Potato
(D) Wheat

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Answer – A

Vitamin necessary to prevent prolonged bleeding is

(A) Vitamin A
(B) Vitamin E
(C) Vitamin D
(D) Vitamin K

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Answer – D