Question # 1

Which process of ester will yield carboxylic acid?

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Hydration

Hydrolysis

Oxidation

Reduction

Which of the following is not macromolecule?

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Proteins

Carbohydrates

Acrylonitirle

Lipids

Chemicals used to kill herbs are:

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Herbicides

Insecticides

Pesticides

Fungicides

If 1 mole of an ideal gas is heated from 273.15 K to 283.15 K at 1 atmospheric pressure, then increase in its energy is

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0.082 atm.dm³

0.821 atm.dm³

8.21 atm.dm³

40.6 kJ

Cyclone collector is used to reduce:

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noise pollution

air pollution

water pollution

radioactive pollution

One statement of isomorphism is incorrect

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they have different chemical properties

they have same physical properties

they have same atomic ratio

they have definite geometric shape

Which of the following is not an inorganic macromolecule

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Graphite

Sand

Strach

Diamond

Temperature required for the dehydration of ethanol into ethene in the presence of HaSOu is

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130°C

170°C

175°C

180°C

Which one of the following is an appropriate indication of positive iodoform test?

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Formation of H2O

Brick red precipitate

Release of H2 gas

Yellow precipitate

In diamond, which hybridization is there?

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sp2

dsp2

sp3

sp

Which of the following alcohol is more soluble in H2O

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Propanol

Butanol

Pentanol

Hexanol

Chemical equilibrium involving reactants and products in more than one phase is called

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Static

Dynamic

Homogeneous

Heterogeneous

A standard hydrogen electrode is used as standard electrode of which electrode potential is arbitrarily taken as

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+1

-1

0.1

Zero

The use of tetra ethyl lead in petrol as an efficient antiknock agent is being discouraged. Which reason is correct

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It is costly

It damages the engine

Pb is difficult to obtain in bulk quantities

The combustion product, lead, causes air pollutions

d-block elements are also called :

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alkali metal

Alkaline earth metals

Transition elements

Electron deficient elements

The solution of which acid is used for seasoning of food

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Formic acid

Acetic acid

Benzoic acid

Butanoic acid

Who one mole of each of the following is completely burned in oxygen, which gives the largest mass of carbon dioxide?

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Carbon monoxide

Diamond

Ethane

Methane

The stability of acromatic compounds decreases with ------- in the no. of its resonance structure

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Decrease

Increase

Remain constant

Partially decreases

The shape of gaseous SnCl₂is

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Tetrahedral

Linear

Angular

T-shaped

Which metal is used in the thermit process because of its activity?

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Iron

Copper

Alumnium

Zinc

Each vertical column of the periodic table includes elements with chemical characteristics that are in general

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Identical

Similar

Different

Similar as well as different

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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