Question # 1

In glass making the whole combination of ingredients is called a.

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Gangue

Batch

Mixture

None of these

Dibornae is used

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Fro high energy fuel

For welding torches

as reducing agent

All above

Vet days are generally applied to the fabric in the form of.

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Mordants

Leuco base

Oxidised base

Dispersed dyes.

Pick out the incorrect statements for transition metals.

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They have low melting and boiling points

5d-element have higher energies than 3d or 4 d elements

Zr and Hf have almost identical atomic and ionic radii

They form interstitial compounds.

The concentration required to give a signal equal to three times the standard deviation of the baseline is called.

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Sensitivity

Detection limit

Signal to noise ratio

None of the above

Co enzyme cna be separated from enzyme by

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Precipitation

Dalysis

Hydrolysis

Distillation

The reduction in ozone layer would lead to

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Temperature chages

Rainfall failure

Increase uv radiation on earth

All above

The correct order of second ionization potential of carbon , nitrogen, oxygen and fluorine is.

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C > N > O > F

O > N > F > C

O > F > N > C

F > O > N > C

Presence of nitrogen in organic compound to tested as.

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Nitrogen gas

NH3

NO

Amide

Egyptians were using ________ to prepare make up for eyes.

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Nanoaluminium

Nanocopper

Nanosteel

Nanolead

Which of the following a -amino acid is not capable of exhibiting optical isomerism.

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Glycine

Leucine

Arginine

Alanine

The sugar present in RNA is

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D- ribose

D-Arabinose

D-Glucose

Deoxyribose

Ammonia when used directly as a fertilizer is to be injected about_____ under the surface to keep it from seeping out.

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2 inches

4 inches

6 inches

10 inches

Equilibrium constant Kp and Kc are related as

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Kc = Kp (RT)delta n

Kp = Kc (RT)an

Kp = (Kc/RT)delta n

Kp -Kc = (RT)delta n

Correct order of increasing ______ I effect of groups is

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----- NO2 >-----------CN > ------------COOH > -------------F

--------F > -------------COOH>----------CN>--------NO2

-----F> -------------CN>--------NO2 > COOH

-------CN > ------------COOH > -----------NO2 >----------F

When calcium is heated in the flame of a Bunsen burner, the colour imparted to the flame is.

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Golden yellow

Brick red

Crimson red

Grassy green

Which of the following compounds shows optical activity

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Lactic acid

Maltose

Glucose

All above

Fluorine form Fluorides reacting with

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Metals

Non metals

Metalloide

Any of above

If diesel has cetane number of 50 then the diesel index will be.

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36

46

56

66

Which of the following has the maximum tendency to form complexes.

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K

Na

Rb

Li

A terpenoid which has as alcoholic group in the molecule is.

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Citral

Camphor

Menthol

Carvone

Has the highest value of electronegativity

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F

Cl

Br

I

Granulated sugar also known as.

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Brown sugar

Refined sugar

White sugar

None of these

Which of the following is the strongest oxidant.

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F2

Cl2

br2

I2

Which of the following compound does not following octet rule.

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CS2

PBr3

IBr

Br F3

Which of the following is not a component of AAS.

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Hollow cathode lamp

Burner

Detector

Tungsten lamp

Which of the following cells is used to produce electricity from chemical reaction

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Electroytic cell

Galvanic cell

Voltaic cell

Fuel cell

Both C and D

Which element amongst the following has the highest boiling point.

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Na

Mg

Ca

K

Which of the following compounds cannot be a monomer.

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CH3-CHOOH -CH2OH

NH2 -CH2-NH2

CH3-CH2-NH3

NH2-CH2-CH-CH2 -NH2

CH3

Which is the strongest reducing agent.

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HF

HCl

HBr

HI

What is the ratio of the maximum load in a tension test to the original cross sectional area of the test bar.

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Tensile strength

Yield strength

Shear strength

Torsion

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