Question # 1

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

According to lgor Sikorsky , he just added an engine to a Leonard da Vinci Design. What did he invent in 1939?

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Jet Plane

Submarine

Hovercraft

Helicopter

What is the unit of electrical energy?

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Ampere

Volt

Watt

Kilowatt- hour

Biogas mainly contains

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Methane

Ethane

Hydrogen

CO

If A. B and C are the mechanisms used separately to reduce the wastage of fuel by 30%,20% and 10%. What will be the fuel economy they were used combined

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20.30%

20.87%

20%

20.34%

The best method of control of a soil borne disease is by

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Using fungicides

Burning affected plants

Crops rotation

Seed treatment

Vitamin B5 is also known as

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Cyonocobalamin

Folic acid

Niacin

None of these

Who invented the foot-powered treadle sewing machine?

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Isaac Singer in 1851

Sir John Lister in 1851

Sir John Fleming in 1851

Sir John Cunningham in 1851

'Cod' is a variety of?

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Amphibia

Crop

Coral

Fish

The medium is used by input dives light pen for graphical input is?

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Interpreter

Binary Coded

CRT screen

Flow chart

Our skin becomes dark, when exposed to excess sunlight. This is because of our ski9n pigment called

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Flavoxanthin

Melanin

Carotene

Xanthopny ll

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