ECAT Pre Engineering MCQ Test With Answer for Chemistry Full Book

Monosaccharides belong to the group

• Lipids A
• Fats B
• Proteins C
• Carbohydrates D

The coinage metals are

• Ni, Pd, Pt A
• Cu, Ag, Au B
• Zn, Al, Pb C
• Fe, Si, Sn D

Which element of group IV-A does not use d-orbital?

• N A
• P B
• As C
• Sb D

Which of the following represents elements in order of increasing atomic size?

• I, Br, Cl A
• Na, Mg, C B
• C, N, O C
• Li, Na, K D

Which of the following is a non-typical transition elements

• Cr A
• Mn B
• Zn C
• Fe D

Proteins and amino acid can be separated by:

• Filtration A
• ^Sublimation B
• Chromatography C
• Suction D

The protein which only yield amino acids and their derivatives

• Simple proteins A
• Complex proteins B
• Derived protein C
• All of these D

First atomic theory was put forward by an English school teacher:

• Maxewell A
• Newton B
• Sanger C
• John Dalton D

The ionic strength of a solution containing 0.1 mole/kg of KCl and 0.2 mole/kg of CuSO₄is

• 0.3 A
• 0.6 B
• 0.9 C
• 0.2 D

The pH range of the acid rain is

• 8 - 7 A
• 7 - 6.5 B
• 6.5 - 6 C
• Less than 5 D

• 2, 2, 4-trimethylpentane A
• 2, 4, 4-trimethylpentane B
• 2, 4, 4-methyepentane C
• 2, 2, 4-methylpentane D

Peat before conversion to bituminous coal is converted to

• Lignite A
• Anthracite B
• Asphalt C
• None D

Hydrolysis of ethyl-acetate (ester) has order of reaction :

• 3 A
• 2 B
• 1 C
• 1 D

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

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

The alkali metals form

• Ionic bond A
• Covalent bond B
• Co-ordinate bond C
• H-bond D

The order of reactivity of halogen acids for reaction with C₂H₅OH is

• HCl > HBr > HI A
• HI > HBr > HCl B
• HBr > HI > HCl C
• HBr > HCl > HI D

Acetic Acid is obtained from:

• Red out A
• Vinegar B
• Butter C
• Milk D

The molecules of CO_{2 in dry ice from the :}

• Ionic crystals A
• Coverlet crystals B
• Molecular crystals C
• Any type of crystals D

Which of the following alkyl halides is used as a mathylating agent

• CH₂H₅l A
• CH₃l B
• C₂H₅Pr C
• C₂H₅Cl D

The reduction potential to copper electrode is +0.34 V and that of Zn electrode is -0.76 V. when these two are coupled the e.m.f. of the cell is

• -0.42 V A
• +0.42 B
• -1.10 V C
• +1.10 V D

A solution has 92 g of ethyl alcohol, 96 g of methyl alcohol and 90 g of water. Mole percentage of ethyl alcohol in the solution is

• 10 A
• 20 B
• 25 C
• 50 D

Purine derivative among the following bases is

• Thymine A
• Uracil B
• Guanine C
• Cytosine D

When ammonia is heated with cupric oxide, a molecule of ammonia will

• Gain 3 electrons A
• Lose 3 electrons B
• Gain 2 electrons C
• Lose 2 electrons D

Who gave the concept of atomic number

• Newton A
• Mosley B
• Dalton C
• Newland D

The value of Plank's constant 'h' is

• 6.625 x 10^-34 A
• 6.625 x 10^-34J sec B
• 6.625 x 10^-34KJ C
• 6.625 x 10^-34K Cal D

The sample being analyzed is called:

• Electrolyte A
• Residue B
• Undue C
• Filtrate D

Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?

• Ozone A
• Nitrous oxide B
• Sulphure dioxide C
• Carbon monoxide D

When vapours of isopropyl alcohol are passed over heated copper, the major product obtained is

• Propane A
• Propylene B
• Acetaldehyde C
• Acetone D

1 erg of energy corresponds to

• 6.02 x 10²³J/mol A
• 6.02 x 10¹⁶J/mol B
• 1 erg/mol C
• 10^-7J/mol D

Baukelite is a polymer obtained from two monomers

• Phenol and ethanol A
• Phenol and methanol B
• Phenol and methanal C
• Phenol and acetone D