MCQ in General Chemistry Part 14 | ECE Board Exam

This is the Multiple Choice Questions Part 14 of the Series in General Chemistry as one of the General Engineering and Applied Sciences (GEAS) topics. In Preparation for the ECE Board Exam make sure to expose yourself and familiarize yourself with each and every question compiled here taken from various sources including past Board Questions in General Engineering and Applied Sciences (GEAS) field.

Continue Practice Exam Test Questions Part 14 of the Series

⇐ MCQ in General Chemistry Part 13 | ECE Board Exam

Choose the letter of the best answer in each question.

651. Which of the following is added to the drinking water distribution system for disinfection?

a. Soda Ash

b. Chlorine

c. Lime

d. Iodine

652. What refers to the number of gram equivalent weights of solute per liter of solution?

a. molarity

b. normality

c. molality

d. formality

653. It is the attraction between like molecules

a. absorption

b. diffusion

c. adhesion

d. cohesion

654. What do you call a substance that cannot be decomposed any further by a chemical reaction?

a. ion

b. element

c. molecule

d. atom

655. Which of the following is the strongest type of bonds?

a. Van de Waals

b. Metallic

c. Covalent

d. Ionic

656. Sublimation is direct change from

a. Solid to liquid phase

b. Solid to gaseous phase

c. Liquid to gaseous phase

d. None of the following

657. What do you call hydrocarbons containing carbon to carbon double bonds?

a. Alkanes

b. Alkenes

c. Alkynes

d. None of these

658. How are materials containing atoms with less than valence electrons classified?

a. An insulator

b. A semi conductor

c. A conductor

d. A compound

659. Which of the following has the characteristics of both metals and non-metals?

a. conductors

b. insulators

c. metalloids

d. meteors

660. How are elements numbered 58 to 71 in the periodic table called?

a. Lanthanons

b. Actinons

c. Earth metals

d. Noble gas

661. What type of bonding in which electrostatic attraction is predominant?

a. Ionic bonding

b. Metallic bonding

c. Covalent bonding

d. Van der Waals bonding

662. What term refers to the passage of an electric current by way of an oxidation reduction reaction?

a. electrolysis

b. electrochemical action

c. electrolyte

d. piezoelectric effect

663. When all atoms of a molecule are the same, the substance is called

a. A compound

b. A chemical

c. An element

d. An ion

664. Which of the following refers to the measure of the amount of negative ions in the water?

a. acidity

b. alkalinity

c. turbidity

d. molarity

665. What device produces electrical current by way of an oxidation-reduction reaction?

a. generator

b. galvanic cell

c. metallic friction

d. all of these

666. What is the maximum number of electrons that can be accommodated in the valence shell of an atom?

a. 6

b. 8

c. 10

d. 12

667. Which component of an atom has no electric charge?

a. proton

b. neutron

c. coulomb

d. electron

668. What is formed when acids will react with active metals?

a. sulfur

b. oxygen

c. hydrogen

d. Chloride

669. How much is the pH content of an acid?

a. Between 4 and 6

b. Between 2 and 7

c. Between 1 and 5

d. Between 0 and 7

670. The condition of a liquid electrolyte is measured in terms of its:

a. Specific gravity

b. Acid content

c. Voltage output

d. Current value

671. What is the substance that speeds up a chemical reaction without itself undergoing a chemical change?

a. ingredients

b. reactants

c. solvent

d. catalyst

672. How are the elements numbered 90 to 103 in the periodic table called?

a. alkali

b. actinons

c. earth metals

d. transition metals

673. What is defined as a value equal to the number of gram moles of solute per 1000 grams of solvent?

a. molarity

b. molality

c. normality

d. formality

674. Which of the following is NOT a part of an atom?

a. electron

b. proton

c. neutron

d. coulomb

675. An element maybe defines a substance, all atoms of which have the same:

a. Number of neutrons

b. radioactivity

c. atomic weight

d. atomic number

676. How does all B families and group VII in the periodic table named?

a. Light metals

b. Rare earth metals

c. Non-metals

d. Transition metals

677. The device which measures the acid content of the cell is called

a. Acid meter

b. hydrometer

c. hygrometer

d. pyrometer

678. The vertical columns of the periodic table are called:

a. Groups

b. Sections

c. Batches

d. Families

679. What term is used to refer to a negatively charged ion?

a. Anion

b. Cathode

c. Anode

d. Cation

680. In copper atom, the valence ring contains:

a. No electrons

b. One electron

c. Two electrons

d. Four electrons

681. The elements along the dark line in the periodic table are referred to as

a. Light metals

b. Metalloids

c. Non-metals

d. Heavy metals

682. What do you call an atom that losses some of its electrons or accepts extra electrons from another atom.

a. Intrinsic

b. mole

c. Neutron

d. Ion

683. What is the smallest part of matter?

a. molecule

b. element

c. particle

d. atom

684. The opposite of alkali

a. acid

b. fluid

c. substance

d. none of these

685. What do you call the electrons in the last orbit or shell of an atom?

a. Bound electrons

b. Free electrons

c. Valence electrons

d. External electrons

686. Which one is a positively charged ion?

a. anion

b. cathode

c. anode

d. cation

687. It is the number of protons in the nucleus of an atom

a. Molecular number

b. Proton number

c. Mass number

d. Atomic Number

688. Hydrogen Peroxide solution for hair bleaching is usually prepared mixing 5 grams of hydrogen peroxide (H₂0₂). Molecular weight = 34 g/mole) per 100 ml solution. What is the molarity of this solution?

a. 1.0 M

b. 1.5 M

c. 1.95 M

d. 1.8 M

689. A cylinder contains oxygen at a pressure of 10 atm and a temperature of 300 K. The volume of the cylinder is 10 liters. What is the mass of the oxygen in grams?

Molecular weight (MW) of oxygen is 32 gmole?

a. 125.02

b. 130.08

c. 135.05

d. 120.04

690. The molecular diameter of CO is 3.10 x 10-8 at 300K and pressure of 100mmHg. What is the mean free path of the gas in cm?

a. 6.86 x 10^-3

b. 6.86 x 10^-5

c. 2.86 x 10^-4

d. 6.86 x 10^-9

691. The electrolyte is the solution of water and

a. Sulfuric acid

b. Uric acid

c. Nitric acid

d. Formic acid

692. Which of the following refers to a measure of the quantity of an element or compound?

a. Oxidation number

b. Atomic number

c. Avogadros number

d. Mole

693. Acids will turn blue lithmus paper to what color?

a. gray

b. yellow

c. violet

d. red

694. What do you call a substance that disassociates in solutions to produce positive and negative ions?

a. base

b. acid

c. electrolyte

d. solute

695. During the complete or partial neutralization of acids. What is the ionic compound formed?

a. salt

b. sugar

c. potassium

d. sulfur

696. Which of the following are found in the nucleus of an atom?

a. electrons and protons

b. electrons and neutrons

c. protons and neutrons

d. electrons, protons and neutrons

697. Which of the following elements and compounds is unstable in its pure form?

a. Helium

b. Neon

c. Carbon Dioxide

d. Sodium

698. What refers to the negatively charge component of an atom?

a. electron

b. proton

c. neutron

d. ion

699. What element is known as the lightest metal?

a. Aluminum

b. Manganese

c. Magnesium

d. Lithium

700. Halogens fall under what group in the periodic table?

a. group VIA

b. group VA

c. group IVA

d. group VIIA

Complete List of MCQs in General Engineering and Applied Science per topic