Question # 1

Which is a hereditary material?

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DNA

RNA

Protein

All of them

Methyl butanoate smell like.

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Apple

Mange

Lemon

Grapes

The value of constant of ionic product of water Kw at 25 C.

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1.0 x 10^-4

1.0 x 10¹⁴

1.0 x 10^-4

1.0 x 10⁴

Water has a maximum density at 4 ^oC

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12 cm^-3

2 g cm^-3

1 g cm^-3

4 gcm^-3

Which one of the following is a fat soluble vitamin?

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A

E

K

All of these

K_c is always equal to

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Rf/Rr

Kf /Kt

Kf/Kr

Rr/Rt

Water dissolves non-ionic compound by

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Ion-ion forces

Ion-dipole forces

Dipole -dipole forces

Hydrogen bonding.

How many units are in Pakistan for manufacturing of Urea.

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3

6

9

12

The reduction of alkyl halides takes place in the presence of.

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Zn/HCl

Na/HCl

Mg/HCl

Cu/HCl

Concentration is a separating technique in which mineral is separated from.

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Gangue

Silicates

Aluminates

All

When the reaction causes to produced it is called.

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Chemical equlibrium state

Static equilibrium

Dynamic equilibriiun

All

How much amount of sunlight reaches up to earth and absorbed:

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26%

32%

50%

18%

Soda time is a mixture of:

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CaO and NaOH

CaCI2 and NaOH

CaO and ca(OH)2

CaCI2 and KOH

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