Question # 1

Which of the following is most excellent solvent.

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Sulphuric acid

Acetic acid

Water

Ammonia

The outermost layer of a root is called.

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Epidermis

Endodermis

Cortex

Xylem

What are teh products when electric current is passed through water.

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Only steam

Hydrogen and steam

Hydrogen and oxygen

Oxygen and steam

The weight of an object of mass 1 kg on Earth surface is

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1 N

10 N

100 N

1000 N

Bacteria move with the help of.

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DNA

Legs

Arm

Flagella

How many periods are there is the Periodic table.

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Five

Six

Seven

Eight

Which of the following is used to cheek heart beat and blood pressure.

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Thermometer

Galvanometer

Stethoscope

Ammeter

The numebr of electorns present in an atom s equal to number of.

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Nucleus

Neutrons

Proton

Atom

Atomic number of element presetnin period 2 and group 15 of the periodic table.

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4

5

6

7

Zince oxide is ............... solid substances.

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Red

White

Yellow

Blue

-------------- can help certalin bacteria to attach with host cell.

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Flagella

Arm

Pili

DNA

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