ECAT Pre Engineering MCQ Test With Answer for Chemistry Full Book

• 0.073 A
• 0.147 B
• 0.05 C
• 0.026 D

Which of these polymers is an addition polymer

• Nylon 6,6 A
• Polystyrene B
• Terylene C
• Epoxy resin D

Which bond is most stable

• C - Cl A
• C - F B
• C - Br C
• C - I D

What will be the weight of deposited silver on passing 965 coulombs of electricity in solution of AgNO₃?

• 1.08 g A
• 2.16 g B
• 0.54 g C
• 0.27 g D

The highest temperature at which a substance can exist as a liquid is called its

• Critical temperature A
• Zero temperature B
• Absolute temperature C
• None of above D

Synthetic polymer prepared from caprolactum is known is

• Nylon 610 A
• Teflon B
• Terylene C
• Nylon-6 D

The number of electron pairs shared in carbon tetrachloride molecule is

• 2 A
• 3 B
• 4 C
• 1 D

The mass of sulphur which combines with 24 grams oxygen to form SO₂

• 32 gram A
• 24 gram B
• 8 gram C
• 12 gram D

The value of activation energy Ea of a reaction can be determined from the value of slope of the straight line obtained by plotting a graph between 1/T and log k. the value of Ea is equal to

• Slope A
• 1/Slope B
• Slope x R C
• Slope x 2.303 R D

When electric current is used to carry out non-spontaneous redox, the process is called

• Hydrolysis A
• Electrolysis B
• Decomposition C
• Neutralization D

A state function of the system which describes together the internal energy and the work done is called

• Enthaply A
• Internal energy B
• Work C
• Free energy D

An excess of aqueous silver nitrate is added to aqueous barium chloride and precipitate is removed by filtration. What are the main ion in filtrate?

• Ag⁺ and NO_3- only

  A

• Ag⁺ and Ba² and NO^-3

  B

• Ba² and NO^-3

  C

• Ba² and NO^-3 and Cl-

  D

The sample being analyzed is called

• Electrolyte A
• Substance B
• Analyte C
• All of above D

• Reaction occurs at STP A
• Reaction is exothermic B
• Reaction is endothermic C
• Number of moles of production and reactant are same D

Which is not nitrogeneous fertilizers?

• (NH₄)₂HPO₄ A
• NH₄NO₃ B
• urea C
• Calcium phosphate D

If the salt bridge is not used between two half cells, then the voltage

• Decrease rapidly A
• Decrease slowly B
• Does not change C
• Drops to zero D

the oxides of beryllium are:

• acidic A
• basic B
• amphoteric C
• None of these D

The general formula of amino acids is

• 
  A
• 
  B
• 
  C
• 
  D

Major fertilizers with micro-nutrients are:

• Nitrogeneous A
• Phosphalic B
• Potash C
• All of these D

How much of NaOH is required to neutralize 1500 cm³of 0.1 N HCl?

• 60 g A
• 6 g B
• 4 g C
• 40 g D

Which of these always applies to a nucleophile

• It attacks a double bond A
• It has a lone pair of electrons B
• It is single atom C
• It is negatively charged D

Alcohols are derivatives of:

• Benzene A
• Alkanes B
• Alkens C
• Alkynes D

The elimination of hydrogen halide from adjacent carbon atoms is called

• Dehydrogenation A
• Hydrogenation B
• Dehydrohalogenation C
• Hydrohalogenation D

Which one of the following elements is not present in all proteins

• Carbon A
• Hydrogen B
• Nitrogen C
• Sulphur D

• di(4-bormophenyl) method A
• Methanol B
• Propan-1-ol C
• Propan-2-ol D

Ether show the phenomenon of :

• Position isomerism A
• Functional group isomerism B
• Metamerism C
• Cis-trans isomerism D

A pseudo uni-molecular reaction has order of reaction :

• 3 A
• 2 B
• 1 C
• 0 D

[Zn(NH₃)₄]³⁺possess geometry

• Square plannar A
• Hexagonal B
• Tetrahedral C
• None of these D

When phenol is reduced in the presence of Zn dust, we get

• Cyclohexene A
• Cyclohexane B
• Benzene C
• Benzyne D

The state of equilibrium refers to

• State of rest A
• Dynamic state B
• Stationary state C
• State of inertness D