Question # 1

Focusing in a camera is carried out by varying

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The amount of light

The distance of the lens form the film

The distance of the lens form the object

The brightness of light and speed of shutter

When item of jewellery made of metals such as copper r nicker are placed in a solution having a salt of gold, a thin film of gold is deposited by:

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passing an electric current

Cooling to below 0 degree C

Heating above 100 degree C

Just keeping it for10 minutes

Which of the following is the sweetest natural sugar?

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Glucose

Fructose

Lactose

Sucrose

Silver were turns black after a period of time due of formation of

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Nitrate coating on silver

Oxide coating on silver

Chloride coating on silver

Sulphide coating on silver

The term 'Carat' is used to express the purity of gold. The purest form of gold is.The purest form of gold is?

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18 carats

20 carets

22 carats

24 carats

What type of EM radiation gives people tens?

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Gamma

Infrared

Ultraviolet

Visible

Which is the following is not a natural polymer?

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Cellulose

Plastic

Rubber

Silk

The percentage of glucose present normal urine is

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0.1%

2%

9.5%

0%

Who graduated on physics form the Sorbonne top of their class?

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Benjamin Franklin

Marie Curie

Andre-Marie Ampere

Charles Darwin

Which of the following is neutral:

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Diethyl amine

Iodine

Potassium chloride

Baking soda

A spherical air bubble is embedded in a place of glass, For a ray of light passing through the bubble, it behaves like a:

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Converging lens

Diverging lens

Piano-converging lens

Piano-diverging lens

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