Question # 1

Which three elements are needed for the healthy growth of plants.

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N,S,P

N, Ca, P

N,P,K

N,K,C

--------------- element forms an ion with charge 3⁺

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Beryllium

Aluminium

Carbon

Silicon

Which one of the following is not steroid

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Cholesterol

Ergosterod

Female sex Harmons

Globulin

Correct order according to atomic size in the following is

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Na > K

Be > Mg

O > N

Cl > F

Which of the following compounds will not give iodoform test on treatment with I2/NaOH

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Acetaldehyde

Acetone

Butanone

3-Pentaneone

Which one is neutral amino acid

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Lysine

Histidine

Glutamic acid

Valine

Which element form an ion with charge +3

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Beryllium

Aluminum

Carbon

Sillicon

Ozone is mostly produced in

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Tropical region

North polar region

South polar region

Thermosphere zone of atmosphere

Ethyl alcohol on reacting with orthoboric acid form

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Ethyl borate

Boric acid

Boron acetate

Borax

-SH Functional group is called

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Cyano

Mercapto

Nitro

Carboxyl

Which one of the following compounds show geometrical isomerism in it.

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1- pentene

1,1 dichloro ethane

all of these

2- Pentene

In a period, from left to right in the periodic table, the size of atom generally.

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Increases

decreases

Remains constant

First increase upto the middle of period and then decreases

The minimum temperature of troposphere is.

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-2^oC

-56^oC

-100^oC

15^oC

Which one of the following gases is used for artificial ripening of fruits.

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Ethene

Ethyne

Methane

Propane

Which one of the following substances have garlic odour and a colourless gas.

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CH3OH

HCOOH

CH2=CH2

HC= CH

Tincal is a mineral of

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Al

C

Si

B

In modern periodic table VI period contains elements

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8

18

10

32

Which field produces significant amount of methane in the atmosphere

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paddy field

Cotton field

Can sugar field

Wheat field

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