Question # 1

The pulse tells us the rate of..........

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Breathing

Heart beat

Both a and b

None of these

A solution is named after the name of

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Solvent

Solute

Mixture

None of these

Element present in grops have same number of ....... in their outermost shell.

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Electron

Proton

Atoms

Neutron

Which gas reacts with food to convert it into carbon dioxide and water.

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Oxygen

Nitrogen

Phosphorus

Argon

The average life span of RBCs is.

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110 days

115 days

118 days

120 days

Irrigation means.

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Supply of waer to land crop

Supply of nutrients

Live stock

Farming

Formula showing maximum number of electrons in a shell.

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n2

2n2

3n2

4n2

Moon takes....... days to move once around the Earth.

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365

30

28

29

Which one of the following statements is correct.

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1 m = 1000 km

m/s is the unit of displacement.

N is the unit of force

1 h = 60 s

The outermost layer of a root is called.

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Epidermis

Endodermis

Cortex

Xylem

Original colur or Nichrome wire is.

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Silver grey

Red hot

White hot

None of these

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