Question # 1

One liter is equal to _____ gallons

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0.2200

0.2100

0.2500

0.2300

The operation of threading a drilled hole is called:

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Tapping

Broaching

Lapping

Reaming

Who invented Radar?

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J.H. Van Tassel

Wilhelm K. Roentgen

P.T Farnsworth

A.H Taylor \and Leo C. Young

What products are as a general rule the result of an acid and a base reaction together?

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Water and salt

water and ethanol

methane gas and dioxide

Hydrogen gas land carbon dioxide

Which vitamin is also known as ''Ascorbic Acid''?

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Vitamin D

Vitamin C

Vitamin E

Vitamin K

German Silver is an alloy of -

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Silver, Copper and Carbon

Copper , Zinc and Nickel`

Silver. Zinc and Cobalt

Aluminium, Zinc and Nickel

A dental plate clings to the roof of the mouth because

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force of cohesion increase

force of cohesion decreases

force of adhesion increases

force of adhesion decreases

Which meta, steel-gray in colour is one if the lightest of all metals, Both the metal and its salts are highly toxic, and must be handled copper , it is extensively used in spring and electrical contacts.

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Gold

Nickel

Silver

Beryllium

Which instrument is used to measure the minute distances?

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Microphone

Microscope

Microtome

Micrometer

which vitamin is present in large amount in citrus fruits like lemons and orange

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Vitamin C

Vitamin K

^{Vitamin D}

Vitamin A

Who invented the rabies vaccine?

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Louis Pasteur

Charles Pravaz

Marie Curie

William Morton

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