Question # 1

Liquids are less common than:

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Solids.

Plasmas.

Gases.

All of above.

What is the effect of polluted air on environment:

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ozone

acid rain

global warming

smog

Which thermometer will have its reading 273 degrees greater than that of thermometer C?

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A

B

B has 273 degrees greater than A

C has greater reading than all other thermometers

Acceptance of macromolecular hypothesis was due to efforts of:

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Kekule

Gibbs

Standiger

anderson

In order to determine ∆H (latt) of ionic compound which is correct relationship

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∆H latt. = ∆Hf - ∆Hx

∆H latt. = ∆Ha + ∆Hv

∆H latt. = ∆Hf + ∆Hx

∆H latt. = ∆Hf - ∆H sol.

The number of unpaired electrons present in Fe ions is

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1

2

5

0

Polar ice caps can melt due to

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Acid rain

Green House Effect

Smog

Chlorofluorocarbons

All of the following are aliphatic amino acids except

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Glycine

Alanine

Proline

Lysine

Fatty acids are:

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Aliphatic mono-carboxylic acids

Di-carboxylic acids

Tri-carboxylic acids

Tetra carboxylic acids

Poly carboxylic acids

α and β Glucose differs in orientation of hydroxyl group around

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C₁

C₂

C₃

C₄

NaOH+HCI- NaCI+ H2O. Enthalpy change in the above reaction is called

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Enthalpy of reaction

Enthalpy of Neutralisation

Enthalpy of formation

Enthalpy of combustion

The color of ppts formed by Benedirct's test is

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Brick red

Wine red

Yellow

Orange

The higher molecular weight materials which yield on hydrolysis the amino acids is called:

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Carbohydrates

Lipids

Fatty acids

Proteins

The elements of group lA are called

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Chalocogens

Halogens

Alkali metals

Alkaline earth metals

The alkali metal which is liquid at 15°C is

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K

Cs

Na

None

Water which his considered to be safe for human consumption is known as

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Distilled water

Contaminated water

Potable water

Rain water

The condition for standard enthalpy change is

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1 atm 30°C

1 atm 50°C

1 atm 25°C

760 atm 25°C

In which of the following theories the hybridizationis considered

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Vsepr

Lewis

Molecule orbital

Valence bond

During electrolysis, electrons are :

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Lost by anions and gained by cations

Gained by anions and lost by cations

Gained only

Lost only

Which reaction yields Bakelite?

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Urea with HCHO

Tetramethyl glycol with Hezamethylene diisocyanate

Phenol and HCHO

Ethylene glycol and Dimethylterephthalate

Volcanoes produce SO₂:

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47%

57%

67%

77%

The potassium fertilizers are preferred for horticulture, tobacco and potatones, which of the following is popular potassium fertilizer

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Potassium oxide

Potassium chloride

Potassium sulphate

Potassium nitrate

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