Question # 1

An alloy contains copper and zinc in the ratio 7 : 3. If the alloy contains 10.5 kg zinc, then the quantity of copper in the alloy is:

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17.35 kg

24.5 kg

28.2 kg

31.5 kg

Which of the following group of plants can be used as indicators of SO pollution of air?

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Epiphytic lichens

Ferns

Liverworts

Hornworts

The study of phenomena at very low temperature is called

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Heat transfer

Morphology

Crystallography

cryogenics

Which of the following fractions is less than 7/8 and greater than 1/3 ?

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1/4

23/24

11/12

17/24

Arthur C Clark the famous science fiction author while working as a radio operator in the World War -H

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Proposed building a space elevator from carbon mono filaments

Postulated the existence of extra terrestrial artifacts on the moon

Proposed that a network of satellite in stationary orbit at very high altitudes around the earth be used to bounce communication signals al over the world

none of these

Vitamins A,D,E and K is called:

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Water soluble vitamins

Primary vitamins

Basic vitamin

Fat soluble vitamin

Which of the following is a cellular fiber?

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Cotton

Wool

Rayon

Polyester

The value of (2.3)³ + .027/(2.3)² - .69 + .09 is:

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2.6

2

2.33

2.27

The sum of 2̅.75 and 3̅.78 is:

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5̅.53

4̅.53

1̅.53

1̅.03

Rainbow formation is due to

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Absorption of sunlight by water droplets

Diffusion of sunlight through water droplets

Ionization of water droplets

Refraction and reflection of sunlight by water droplets

Three numbers are in the ratio 1 : 2 : 3 and their H.C.F. is 12. The numbers are:

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12, 24, 36

10, 20, 30

5, 10, 15

4, 8, 12

In an examination, a student scores 4 marks for every correct answer and loses 1 mark for every wrong answer. If the attempts all 75 questions and secures 125 marks, the number of questions he attempts correctly, is:

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35

40

42

46

The severity of 2005 earthquake in Pakistan on Richter scale was

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6.9

7.6

7.1

None of these

What is the only source of free alleles?

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Crossing over

Independent assortment

Mutation

Fertilization

If carbon dioxide is passed through lime water for a long time, the cloudy white color disappears because of the formation of:

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Calcium bicarbonate

Calcium hydroxide

Calcium carbonate

Calcium sulphate

What least number must be subtracted from 13,294 so that the remainder is exactly divisible by 97 ?

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3

5

1

4

Which of the following rations is the largest ?

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7 : 15

15 : 23

17 : 25

21 : 29

Stethoscope was invented by

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William shockley

Tim berners lee

Chester carlson

William stockes

Photograph works by

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Capturing the soul of objects being photographed

Capturing light reflected from the object being photographed

both a and b

None of these

How many numbers up to 200 are divisible 2 and 3 both ?

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35

33

29

27

The L.C.M. of 3, 2.7 and .09 is:

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2.7

.27

.027

27

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