Question # 1

A thionic acid

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H2S2O3

H2S2O6

H2S2O8

H2S2O7

a-terpioneol is obtained on hydration of which of the following with dilute H2SO4.

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Citral

Myrcene

Linalool

Limonene

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

Fertilizers are classified into

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Two major categories

Three major categories

Four major categories

None of above

Which of the following molecules belongs to C_av point group.

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H2O

H2S

NH3

BF3

In nature nickel is found in the form of.

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Sulphides

Silicates

Arsenides

All

The prefiex 'nano' comes from a

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French word meaning billion

Greek word meaning dwarf

Latin word meaning invisible

Spanish word meaning particle

Which one of the following noble gas is obtained by radioactive disintegrastion

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Kr

Br

Rn

Xe

Water that easily forms a lather of films and frotha when agitated with a soap solution called.

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Hard water

Heavy water

Soft water

Washing water

The purification of Bauxite can be carried out.

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Baeyer's process

Hall's process

Serpek's process

Any of above

According to CFT the metal ligand bond is considered to be ionic to presentage.

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100%

90%

50%

70%

Which of the following combination is used to make buffer.

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NaOH and HCl

KOH and H2SO4

CH3COOH and CH3COONa

CH3COOH and NH4OH

Which of the following oxide formed in appreciable quantity in the atmosphere.

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NO

NO2

N2O

All above

Which of the following methods is the most common method for separation of liquid components from a mixture.

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Dialysis

Solvent extraction

Precipitation

Distillation

What cast iron has modular or spheroidal graphite?

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Ductile iron

Gray iron

White iron

Raw iron

The hybridization of sulphur in sulphur dioxide is.

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sp

sp2

sp3

dsp2

Reacts violently with water

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AlH3

AlCl3

Lia IH4

Al2Cl6

According to Arrhenius theory an acid is defined as substance which

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Accepts and electron pair

Donatees H+ ion in ammonia

Contains Cl- ions

Furnishes H3O + ion in water

The range of sound pressure for uncomfortable level is.

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80 - 90 dB

100 - 120 dB

130-140 dB

All above

Which of the following is not a colligative property.

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Elevation of B.P.

Depresaion in F.P

Viscosity

Osmotic pressure

Variable oxidation states is shown by

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Normal eleemnts

Metallic elements

Non metallic elements

Transition elements

Which of the following is most soluble in water

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CaSO4

Sr SO4

MgSO4

BaSO4

The three dimensional silicate anion (Si2O5^2-)n is present in

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Beryl

Silica

Asbestos

Clays

Presence of nitrogen in organic compound to tested as.

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Nitrogen gas

NH3

NO

Amide

The process of determining amounts of each of the components in a sample of matter is termed as.

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Gravimetric analysis

Coulometric analysis

Quantitative analysis

Qualitative analysis

Which of the following group reagent is used for III group of basic radical.

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Dilute HCl

H2S + HCl

NH4OH + NH4Cl

NH4OH + H2S

Which of the following will be most effective int he coagulntion of

Fe (OH)3 sol.

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NaCl

MgSO4

AlCl3

Mg3 (PO4)2

Which of the following has the highest melting poing.

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NaCl

Li Cl

KCl

Rb Cl

The different layers in graphite are held together by

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Ionic bonding

Metallic bonding

Covalent bonding

Van der Waals forces

Which of the following is an example of molecular solids.

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MgO

ZnO

Ice

Graphite

Which of the following elements has the highest value of second ionization energy.

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Lithum

Beryllium

Boron

Magnesium

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