Question # 1

SO₂produced by volcanoes is about

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75%

67%

69%

70%

Cellulose is formed from

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D-galactose units

50% of D-glucose and 50% of L-glucose units

L-glucose units

D-glucose units

Example of basic essential amino acids

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Arginine

Histidine

Lysine

All of the above

Ti+3 shows minimum absorption (maximum transmittance) at-------and-------wavelength

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Yellow, Green

Red. Yellow

Blue. Green

Red. Blue

Which of the following tends to approach ideal gas like behavior at R.T.P

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ammonia

neon

carbon dioxide

chlorine

Which one is an isomorphic pair?

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NaNO3, CaCO3,

NaF, MgO

K2SO4 ,K2Cr2O7

Zn, Cd

Which of the following undergoes easy dehydration?

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3-MethyIbutan-2-ol

Ethanol

2.Methylpropan-2-ol

Methanol

The number of molecules in 22.4 dm3 of gas at 0°C and 1 atm are

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6.02×10(23)

6.02× 10(25)

6.02×10(22)

6.02×10(21)

One of the following is potically non active amino acid

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Valine

Tyrosine

Glycine

Theronine

Doubling the pressure in a liquid phase reaction

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Will double the rex

Will increase the rex

Will decrease the rex

Will not alter the concentration of reactant

Which is not an air pollutant

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N₂

CO

NO

N₂O

Reation of which with Grignard's reagent gives primary alcohol:

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Formaldehyde

Aldehyde

Ketones

Acetone

What element is not essential the growth of plants and is not required in the fertilizers

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Nitrogen

Potassium

Phosphorus

Barium

Energy of electron in first orbit of H atom is

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-45.32 KJ/mole

-82.08 KJ/mole

-52.53 KJ/mole

-1313.31 KJ/mole

The chemical formula of gypsum is

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CaSO₄. 5H₂O

CaSO₄. 4H₂O

CaSO₄. 2H₂O

None of these

By reaction Grignard's reagent with the HCHO we get

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1° - alcohol

2° - alcohol

3° - alcohol

All of these

Borax is hydrated:

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Penta

Deca

Hepta

Octa

The shape of gaseous SnCl₂is

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Tetrahedral

Linear

Angular

T-shaped

One of the following bonds is polar but compound is non-polar

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H₂O

NH₃

HCl

CO₂

The addition of HBr is easiest with

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CH2 = CHCl

CICH = CHCl

CH3 - CH = CH2

(CH3)2 C = CH2

Atoms and molecules can either gain or lose electrons, forming charge particles called:

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Positrons

Photons

Ions

Electrons

Transition elements have valence electrons in

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s-orbital

p-orbital

d-orbital

f-orbital

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