Question # 1

If the numerator and the denominator of a proper fraction are increased by the same quantity, then the resulting fraction is

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Always greater than the original fraction

Always less than the original fraction

Always equal to the original fraction

None of the above

The H.C.F. of 2923 and 3239 is:

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37

47

73

79

If the radius of a circle is decreased by 50%, its area is reduced by:

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25%

50%

75%

None of these

The planet Mercury completes one rotation around the sun is

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88 days

365 days

98 days

60 days

The average age of three boys is 25 years and their ages are in the proportion 3 : 5 : 7. The age of the youngest boy is:

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21 years

18 years

15 years

9 years

A man willed his property to his three sons ---- to the youngest he gave Rs. 698.49, to the second 3.4 as much as to the youngest, and to the eldest 3.7 times as much as to the second. What was the value of his estate?

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Rs. 16450.50

Rs. 16444.55

Rs. 16444.90

Rs. 16444.96

Which is the greatest five digital number exactly divisible by 279?

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9960

99882

99550

None of these

Which refrigerant is commonly used in cold storage in our country

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Ethylene

carbide

Liquid ammonia

Sodium benzoate

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

Deuterium differ from hydrogen in having:

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Different atomic number but same atomic weight

Different atomic number and different atomic weight

Same atomic number and different atomic weight

None of these

The product of two numbers is 120. The sum of their squares in 289. The sum of the two numbers is

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20

23

169

None of these

If x/5 = y/8, then (x + 5) : 1(y + 8) is equal to:

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3 : 5

13 : 8

8 : 5

5 : 8

A man spends 35% of his income on house rent, 75% of the remaining on other items. What percentage of income does he save?

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16.25

34.50

48.75

None of these

Sir Isaac Newton and Gottfried Leibniz working independently in the 17th century laid the foundation of classical physics and are known as fathers of

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Astrology

Relativistic theory

Integral and differential calculus

None of these

What is the sum of all the numbers less than 50 that are in the region labeled y ?

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24

37

47

84

108

The term cell was coined by

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schwann

robert hook

de ban

Tatum

In mitosis chromosomes line up at the equatorial plate during

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Anaphase

Metaphase

Prophase

Telophase

In winter an iron pipe feel colder than a wooden window. this is because wood is:

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Conductor

Non conductor

Semi conductor

Not a solid while iron is a solid

The unit that coordinates different devices of the computer system is;

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A L U

Register

Control unit

Logical instruction

In human most nutrient molecules are absorbed by the:

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Small intestine

Stomach

Liver

Large intestine

Television signals are converted into light signals by:

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Optical fiber

Transistor

Decoder

Photo diode

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