Question # 1

The flavour of amylacetate is

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Orange

Apricot

Banana

Pineapple

Which compound show hydrogen bonding

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C₂H₆

C₂H₅Cl

CH₃OCH₃

C₂H₅OH

The colour of transition metal complexes

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d-d transitions of electrons

paramagnetic nature of transition elements

ionization

loss of s-electron

Which is the least reactive of all the alkali metals

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Li

Na

K

Cs

Air of the following tests are used to identify aldehydes except.

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Tollen's test

Fehling test

Baeyer's test

Benedict test

The chemical formula of Sodium Bromite is.

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NaBrO

NaBrO2

NaBrO3

NaBrO4

Magnesium metal does not burn in the jar of

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N2

O2

Ne

N2 and O2

Sulphur is essential constituent for plants. Which is not role of sulphur

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Chlorophyll development

Development of root system

Constituents of some proteins

Increase transpiration force

Peroxyacetyl nitrate is an irritant to humab beings and it affects

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Eyes

Ears

Stomach

Nose

The reactivity order of alkyl halides for a particular alkyl group is

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Fluoride > Chloride > Bromide > iodide

Chloride > Bromide > Fluoride > iodide

Bromide > iodide > chloride > Fluoride

Iodide > Bromide > Chloride > Fluoride

Which reaction is disproportionate reaction

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Aldol Condensation

Cannizzaros's reaction

Haloform reactions

Acid Catalyzed reactions

The resonating contributing structures of Benzene are

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2

3

5

7

Which alkyne reacts with water and form aldehyde

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Ethyne

Propyne

1- Butyne

2- Butyne

Which electronic configuration corresponds to an element of group III-A of the Periodic Table

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1s²,2s²,2p⁶,3s²,3p¹

1s²,2s²,2p⁶,3s²,3p⁶,4s⁶

1s²,2s²,2p⁶

1s²,2s²,3s²,3p³

Predict the product or reaction.

Acetaldehyde +NaOH

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An aldol

Acetic acid

Ethanol

Paraldehyde

On heating aldehydes with Fehling's solution we get a precipitate whose colour is

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Pink

Black

Yellow

Brick red

m-choronitro benzene is prepared by

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Nitration of chlorobenzene

Nitration of Benzene

Chlorination of Nitrobenzene

Nitration of m-chlorobenzene

Which catalyst is used in contact process.

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Fe2O3

V2O5

SO3

Ag2O

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