Question # 1

The oxides of metal sare generally

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Acidic

Basic

Neutral

Amphoteric

Methyl alcohol can be distinguished from ethyl alcohol by

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Action of Cl2

Action of NH3

Dissolving in H2O

NaOH +I2

Phosphorous helps the growth of

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root

leave

stem

seed

Which acid is used in the manufacture of synthetic fibre

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Formic acid

Oxalic acid

Carbonic acid

Acetic acid

When hydrolyzed, protein yields.

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Fatty acid

Glycerol

Amino acid

Nucleosides

The temperature of digester is main tained at

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100^oC

160-180^oC

200^oC

200-240^oC

Which statement is correct about the given reaction.

2NaOH + Cl2 --------------- NaCl + NaCIO + H2O

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Cl is oxidized and O is reduced

Cl is reduced and O is oxidized

Cl is oxidized as well as reduced

Neither Cl nor oxygen is reduced or oxidized

Keeping in view size of atoms ,which order is the correct one.

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Mg > Sr

Ba > Mg

Lu > Ce

Cl > I

For which mechanisms, the first step involved is the same.

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E2 and E2

E2 and SN2

SN1 and E2

E1 and SN1

Variable valency is generally exhibited by

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Transition elements

Alkali metals

s-block elements

Gaseous elements

Which class of compounds can not show positional isomerism.

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Alkanes

Alkene

Alkynes

Alcohol

Formic acid is present in.

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Butter

Vinegar

Ant

Sunflower

In which reactions alkane is not produced

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Subatier's and Sendern reaction

Koibe's reaction

Wolf -Kishner's reduction

Dow's process

In which country first of all paper was invented

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USA

China

Egypt

Germany

Number of elements in the first period of the periodic table is

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2

8

14

18

The brown gas formed, when metal reduce HNO₃

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NO

NO₂

N₂O₃

N₂O₅

Acetic acid is commercially prepared form

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Ethene

Ethane

Ethyne

Ethanol

The substance which is added to remove impurities is known as

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Slag

Flux

Ore

Gangue

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