Question # 1

Dry ice is

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Solid CO

Solid CO2

Solid NH3

Solid SO2

The sugar present in RNA is

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D- ribose

D-Arabinose

D-Glucose

Deoxyribose

The oxidation state of Pt in Xe+ [Pt F6] is

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+4

+5

+6

None of these

The rising world temperature will have serious effect on.

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Agriculture

Animal production

Human being

All above

Which among the following elements has the highest value of IE.

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Mg

Na

Ca

Sr

Which of the following statements is wrong.

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Covenant compounds are generally soluble is polar solvents.

Covalent compounds have low melting and boiling points

Lower than that of separate H atoms

Sometimes lower and sometimes higher than that of separate H

When steam is passed over red bot coke The product formed is

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Hydrogen and carbon dioxide

Mixture of hydrogen and carbon monoxide

Mixture of hydrogen and oxygen

Heavy hydrogen

The concept of telluric helisx was developed by

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Lother meyer

A.E. de Chancourtois

New lands

Doberieiner

Group IV A consist of elements

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3

4

5

6

In second group of inorganic qualitative analysis, the S^2-ions does not form precipitate with which of the following ions.

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^Hg2+

Cu²⁺

Ai³⁺

Cd³⁺

The function of boiling the sodium extract with conc. HNO3 before testing the halogens is

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To make solution clear

To make the solution acidic

To bring common ion effect

To destroy CN- and S2- ion

Which of the following analytical method is based on the rotation of light ratiation

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Refractomerty

Polarimetry

Interformetry

Polarography

The IUPAC suffix used for ______ NC group is

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Cyanide

Isocyanides

Carbylamines

Nitrite

The percentage of nitrogen in urea is.

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36%

46%

55%

65%

_________ is preferred for horticultural crops and for tobacco and potatoes.

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Potassium Chloride

Potassium Sulphate

Potassium NItrate

None of these

Un-like s -block elements d-block elements form which compounds as well

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ionic compounds

Co valent compound

Co ordinate compounds

None of above

Which of the following statements is worng.

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Covalent compounds are generally soluble is polar solvents

Covalent compounds have low melting and boiling point.

Ionic solids do not conduct electricity is solid state

Ionic compounds conduct electricity in the fused state.

If Principal quantum number n = 4 the quantum number l can have calue.

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1,2,3 and 4

0,1,2 and 3

1,2 and 3 only

None of the abvoe

Which of the following agrochemical acts as pollutant.

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Fertilizers

Weedicides

Herbicides

All above

What group of steels are molybdenum high sped steels.

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Group A

Group D

Group M

Group H

The width of a carbon nano tube is.________ nm

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1

1.3

2.5

10

Which of the following is branch chain polymer.

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Glycogen

Terylene

PVC

Orlen

[Ti(OH2)6]3+ gives colour

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Green

Red

Purple

Blue

Bromination of n-butane produces.

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I-bromobutane as the major product

2- bromobutane as the major product

Both I - bromo and 2- bromobutane with equal percentage

Both i-bromo and 2-bromo products whose percentage depends upon temperature.

The chemical method of separation in which the analytes to be separated are distributed between two phases, one of which is stationary phase while the other moves in a definite direction This technique is known as.

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Electrophoreals

Chromatography

Solvent extraction

Catachreals

Relative order of acidity of HF, HCl, HBr, and HI acids is

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HCl > HBr > HI > HF

HF > HCl > HBr > HI

HI > HBr > HCl >HF

HF > HI > HCl > HBr

The first ionization energy of Mg is lower than

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Na

Ca

Al

Be

For quality control of Portland cement, the test essentially done is.

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Setting time

Soundness

Tensile strength

All

What is called black gold.

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Petroleum

Coal

Coal tar

Natural gas

An example of acrylic monoterpenoid is

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Dipentene

Myocene

a- terpineol

Limonene

In the electrolysis of alumina, cryolite is added to.

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Lower the melting point of alumina

Increase the electric la conductivity

Minize anodize affect

Remove impurites from alumina

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