Question # 1

Which sugar is called milk sugar

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Glucose

Fructose

Lactose

Maltose

Ecosystem is smaller units of.

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Lithosphere

Hydrosphere

Atmosphere

Biosphere

Grignard reagent is reactive due to

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The presence of halogen atom

The presence of Mg atom

The polarity of C -Mg bond

None of the above

The reacts with halogen acids to form alkyl halide the process is known as.

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Halogenation

Hydrohalogenation

Hydrogenation

Dehydrohalogenation

Which compound is more soluble of water

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C2H5OH

C6H5OH

CH3OCH3

n- Hexanol

Starch mixture of

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Amylose and xylose

Amylopectin and lactose

Lactose and sucrose

amylose and amylopectin

Which is simplest amino acid

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Alanine

Protein

Lysine

Glycine

Ethanol reacts with Na metal to form sodium ethoxide. What product will be formed when C2H5ONa reacts with methyl bromide.

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C2H5OC2H5

C2H5OCH3

CH3COC2H5

C2H5Br and NaBr

Which allotrope of phosphorus has layers like graphite.

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white phosphorus

Red phosphorus

Black Phosphorus

Amorphous phosphorus

Which substance is used to lower the melting point of NaCl in Down's cell

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CaCO3

CaCl2

MgSO4

AlCl3

d -block elements which show anomalous configuration in first series are

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Cr and Ni

Cr and Cu

Cu and CO

Fe and Ni

Micronutrients for plant are those which

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Are required in very large amount

Are required in very small amount

Are produced from plants in very small amount

Retard the growth of plants

Which elements are needed for healthy growth of plants

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N,S,P

N,Ca,P

N,P,K

N,K,C

Nylon 6,6 is obtained by the reaction of hexamethylene diamine with

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Acetic acid

Adipic acid

Viny chloride

Acetyl chloride

Boric acid can not be used.

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As antiseptic in medicine

For washing eyes

In soda bottle

For enamels and glazes

Silver mirror test is given by

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Ethers

Ketones

Acids

Aldehydes

Which element when react with chlorine form polymeric halide.

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Na

Be

Ba

P

Which of the following noble gas is used for arc welding and cutting

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Helium

Argon

Xenon

Radon

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