Question # 1

In addition to their role in ozone depletion,CFCs play a role in global warming by

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Absorbing solar radiation

Blocking ultraviolet B radiation

Absorbing earth shine in the 10 micron region

Destroying ozone, which cools the earth

Plaster of paris is obtained from

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Brochantite

Gypsum

Chalcanthite

None of these

Resolve into factors: (a + b)² - 14c(a + b) + 49c².

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(a - b - 9c)³

(a + b -7c)²

(a + b +9c)²

None of these

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x = ∞ + β + γ

x + β = ∞ + γ

x + γ = β + ∞

x + ∞ = β + γ

The name of the common mineral salt present in seat is:

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Calcium Oxalate

Potassium sulphate

Sodium chloride

Iron sulphate

This is how much actual water vapor is in the air at a certain temperature.

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Absolute humidity

Relative humidity

Variable

None of these

After an employer figures out an employee's salry of Rs. 190.57, he deducts Rs. 3.05 for social security and Rs. 5.68 for pension. What is the amount to be paid after these deductions ?

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Rs. 180.45

Rs. 180.84

Rs. 181.45

Rs. 181.84

The energy possessed by water in a dam is:

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electrical energy

kinetic energy

potential energy

mechanical energy

The unit used to measure the distance between stars is

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Galactic unit

Light year

Cosmic kilometer

Stellar mile

Blood glucose is raised by all of the following except

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Glycogen

insulin

trachea

Epinephrine

The number of ways, in which 8064 can be resolved as the product of two factors, is

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10

16

24

48

The value of √2 up to three places of decimal is:

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1.410

1.412

1.413

1.414

Light year is related to:

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Time

Distance

Energy

Speed

There are 100 people on a line. Aviva is the 37th Person and Naomi is the 67th person. If a person on line is chosen at random, what is the probability that the person is standing between Aviva and Naomi ?

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1/100

29/100

3/10

31/100

1/2

Pollination by birds is called

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autogamy

Ornithophily

Entomophily

Anemophily

Polygenic characteristic are controlled by:

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Dominant genes

Recessive genes

Multiple genes

Mutated genes

Four year ago, the average age of A and B was 18 years, At present the average age of A,B and C is 24 year, What would be the age of C after 8 years?

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30 years

32 years

28 years

25 years

If an alloy contains copper and silver in the ratio 3 : 7, then the percentage quantity of silver in the alloy is

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90%

70%

60%

None of these

Fiesh eater are called:

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Omnivores

Carnivores

Herbivores

Seavengers

Microfilaments are composed mainly of a protein called

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Actin

Tubulin

Myosin

Chitin

The half life of radio active element is 8-days.How long it take to reduce it from 10 mg to 5 mg?

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4 days

12 days

16 days

8 days

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