Question # 1

Which refrigerant is commonly used in cold storage in our country

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Ethylene

carbide

Liquid ammonia

Sodium benzoate

Founder of modern astronomy was

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Archimedes

William gilbert

Nicolas copernicus

Michael faraday

Which are air polutants?

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Aerosols

Sewage

DDT

Fertilizers

Protein are made up of

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Polynucleotide

Polypeptide

Oxyacetylene

None of these

Number Series Test

1/81, 1/64, 1/49, ......................................

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1/36

1/25

1/100

1/24

RAM of a computer is refers to:

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Read access memory

Right acces memory

Random acces memory

None of these

Permanent hardness of water is due to the presence of

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Calcium bicarbonate

Magnesium bicarbonate

Calcium sulphate

Sodium bicarbonate

25% of a number is 20. What is 40% of that number ?

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30

32

35

31

Which famous inventor ranks second in the number of patents registered?

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Thomas alva edison

James newton

Leonardo da vinci

Jacques Cousteau

The time taken by the sun to revolve around the center of our galaxy is

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50 mn years

100 mn years

250 mn years

365 mn years

Fruit rich in fat is

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Citrus

Avocado

Guava

Apricot

Who was the early dentist and also inventor of many surgical instruments :

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Avicenna

Al-Zahrawi (Abulcasis)

Ibn al-Haytham

Al-Jahiz

The ozone layer is present in atmosphere above earth. The stratum (Layer) of atmosphere in which ozone layer lies is called as

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Exosphere

Mesosphere

Stratosphere

Lonosphere

Troposphere

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3

2 + 3√2

3 + 2√2

5

8

Resolve into factors: 81x²y² + 108xyz + 36z².

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(6xy + 9z)²

(9xy - 7z)²

(9xy + 6z)²

None of these

Milk that are remain on supermarket shelves. free of microbial growth for many years has been processed by which of the following methods?

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Using antibiotics in animal feed

sequestrates

aseptic processing

use of humeetants

In normal adult human , what is the rate of heartbeat per minute?

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72-80

70-75

80-97

82-87

The diameter of a certain rod is required to be 1.5610 ± 0.015 in. The rod's diameter must be between ------------ and ---------------

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1.49 and 1.50 in

1.52 and 1.49 in

1.53 and 1.52 in

1.55 and 1.52 in

Our sun is classified as

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A blue giant

A Yellow dwarf

Supernova

None of these

A car is run until the gas tank is 1/8 full. The tank is then filled to capacity by putting in 14 gal. The capacity of the gas tank of the car is

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18 gal

17 gal

16 gal

15 gal

The value of (2.3)³ - 0.027 / (2.3)² + 0.69+0.09 is

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2

3

2.327

2.273

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