Question # 1

Which is the correct formula of calcium phosphide.

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CaP

Ca₃P₂

CaP₂

Ca₂P₃

The elements of a group show properties.

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Same

Different

Both a and b

None of these

In an irrversibel reaction equilibrium

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Never establised

Established quickly

Established slowly

Established when reaction stops

Which of the following grops contain alkaline earth metals.

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I A

II A

VII A

VIII A

If the Delta H value is negative then reaction witll be

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Endotermic

Exothermic

May or may not be exothermic or endothermic

None of these

The new substance formed in a chemcial reaction is.

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Reverse

Reactant

Forward

Product

M shell has sub sheels.

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1s , 2s

1s,2s,3s

2s,2p

3s,3p,3d

40 g of H₃PO₄ contains numebr of moles

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0.58 g

4.8 g

5.8 g

0.408 g

Water has high boiling point as compared a alcohol due to

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Low density

High surface tension

Hydrogen bonding

High vapour pressure

Allotropes of oxygen are

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2

3

4

5

Proton are feflected toward plate.

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Positive

Negative

Both a and b

None of these

Identify the covalent compund

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NaCl

H₂O

KF

MgO

During the glycolysis net ATP produced are.

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2

4

6

8

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