Question # 1

Phosphorus is very useful in the growth of:

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leave

stem

seed

root

Most of the universe consists of the matter in :

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Gaseous state

Liquid state

Plazma state

Solid state

In [Ti (H2O)]3+ which colour is transmitted

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Yellow

Blue and red

Blue and yellow

red and yellow

Gases are effused through a whole due to ______ motion

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Vibration

Rotaional

Translational

Chaotic

A fat with 18 carbon & no double bond will be

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Solid

Liquids

Gel like

None

Air at sea level is dense.This is a practical application of

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Boyle's law

Charle's law

Avogadro's law

Dalton's law

For an endothermic reaction, enthalpy of reactants

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Is smaller than that of the products

Is greater than that of the products

Must be greater or smaller than that of the products

Is equal to that of the products

Hexamethylene reacts with _______ to prepare nylon 6,6

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acetic acid

adipic acid

formic acid

none of above

A peptide having molecular mass of more than 10,000 is called as

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Fat

Vitamin

Carbohydrate

Proteins

Aniline is the derivative of the benzene containing the

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Hydroxyl group

Amino group

Amido group

Imido group

Mathematically, Boyle's law is indicated as:

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VT = K

PT = K

PV = K

None of these

For every reaction occurring in the body three is at least one type of

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Enzyme

Vitamin

Protein

Amino acid

Which of the following statements is no correct regarding bonding molecular orbitals?

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Bonding molecular orbitals possess ls energy than atomic orbitals from which they are formed.

Bonding molecular orbitals have low electron density between the two nuclei.

Every electron in bonding molecular orbitals contributes to the attraction b.w atoms.

Bonding molecular orbitals are formed when the electron waves undergo constructive interference.

The order of reactivity for a given halogen in Grignard's reagent is:

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CH₃X > C₂H₅X > C₃H₄X > C₄H₄X

C₂H₅X > C₃H₇X > C₄H₅X > CH₄X

C₃H₇X > C₄H₇X > CH₃X > C₂H₅X

C₄H₄X > C₃H₇X > C₂H₅X > CH₄X

Which of the following compound is known as oil of winter green?

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Phenyl benzoate

Phenyl salicylate

Phenyl acetate

Methyl salicylate

If a large number of amino acids (hundreds to thousands) are joined by peptide bonds, the resulting product is called

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Dipeptide

Tripeptide

Polypeptide

None of these

Which are used as essences (flowers)?

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Aldehydes

Ketones

Alcohols

Esters

Coupling of Pb with its Pb⁺⁺/Pb = -0.13 V and Ag with Ag⁺/ Ag = +0.80 V, the cell reaction

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Hydrogen chloride molecule contains

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Covalent bond

Double bond

Co-ordinate bond

Electrovalent bond

The percentage of which element in the organic compound is determined by the difference method

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Carbon

Hydrogen

Nitrogen

Oxygen

The cell in which a non-spontaneous redox reaction takes place as a result electricity is known as :

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Electrolytic cell.

Voltaic cell.

Daniel cell.

Dry cell.

The Electro-negatively difference for ionic bond must be greater than

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1.6

1.7

1.8

1.0

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