Question # 1

What is the chemical name of vitamin b-2?

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Riboflavin

Calciferol

Pantothenic acid

Ergocalciferol

A can copy 50 papers in 10 hours while both A&B to copy 26 papers?

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13

12

17

19

Light travels slower in glass than in air because:

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Density of glass is less than that of air

Density of glass is greater then that of air

Refractive index of air is less than that of glass

The difference between 5 time and 3 times of a number is 36. Find the number:

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10

12

15

18

Who took the earliness known photograph?

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Edwin Land

Joseph Niepce

George Eastman

Fox Talbot

The acronym STD written on telephone booth stands for:

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Straight Telephone Dial

Switch Telephone Dial

Subscriber Telephone Dialing

Save Telephone Dialing

The abnormal constituent of urine is:

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Albumin

Urea

Creatinine

Sodium

A glass chimney stops an oil lamp form smoking because:

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It increase the supply of oxygen to the flame by convection

The heat produced ensures complete

Both of these

Neither of these

When steam passed through white hot coke a reaction occurs and the temperature of he coke falls,

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What does the indicate

The reaction is endothermic

coke contain impurities

The reaction is exothermic

Ginger and sweet potato are

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Homologous

Stem and root s respectively

Analogous

Both (b) and (c)

Which mental has a melting point of 1084, It is widely used as an agricultural poison, and as an agricultural in the purification of water in its pure form its is reddish-brown in colour

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Arsenic

Lead

Copper

Tin

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