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CBRC Diagnostic Exam Chem

Total questions: 35

Worksheet time: 18mins

Name
Class
Date
1.

It is the sum of the number of protons in the nucleus of each atom of the element

a)

Mass number

b)

Atomic symbol

c)

. Atomic number

d)

Molecular weight

2.

It indicates the shape of an orbital.

a)

Magnetic quantum number

b)

Spin quantum number

c)

Principal quantum number

d)

Angular quantum number

3.

It is an interconversion of matter from solid to liquid.

a)

Deposition

b)

Sublimation

c)

Evaporation

d)

Melting

4.

A scientist who proposed the “Nuclear Model”.

a)

Dalton

b)

Bohr

c)

Thompson

d)

Rutherford

5.

Which of the following is true regarding a reducing agent?

a)

Decrease in valence

b)

Reducing agent undergoes oxidation

c)

Gains electron

d)

Reducing agent undergoes reduction

6.

It is a state of matter that has the ability to flow and its individual particles are confined to a given volume.

a)

Solid

b)

Plasma

c)

Liquid

d)

Gas

7.

Which of the following is not true regarding heterogeneous mixtures?

a)

Particles cause Tyndall effect

b)

Not uniform

c)

An example is a salt solution

d)

Combination of two or more compounds

8.

It is a state at which the amount of reactants and products present are constant.

a)

Chemical reaction

b)

Chemical equation

c)

Chemical process

d)

Chemical equilibrium

9.

What is the oxidation number of permanganate ion?

a)

-2

b)

-1

c)

+2

d)

+1

10.

What type of reaction is involved in this example: 2KI+Pb(NO3)2→2KNO3+PbI2?

a)

Synthesis

b)

Decomposition

c)

Double replacement

d)

Single replacement

11.

A branch of chemistry that applies the mathematical theories and methods of physics to the properties of matter, chemical process and energy changes.

a)

Physical Chemistry

b)

Analytical Chemistry

c)

Biochemistry

d)

Inorganic chemistry

12.

Which of the following is an example of a chemical property of matter?

a)

Density

b)

Refractive index

c)

Formation of bubbles

d)

Melting point

13.

A scientist who experimentally demonstrated that the major properties of an element are determined by the atomic number.

a)

Lavoisier

b)

Moseley

c)

Newlands

d)

Mendeleev

14.

It states that “mass is neither created not destroyed in a chemical reaction, total mass of the reactant and product will be the same at any point in time in a closed system”.

a)

Law of conservation of mass

b)

Le Chatelier’s principle

c)

Law of definite proportions

d)

Law of Multiple proportions

15.

These are atoms having same atomic number but different mass number.

a)

None of the above

b)

Isotone

c)

Isotopes

d)

Isobar

16.

It is an enzyme which catalyzes the synthesis of two molecular substrates into one molecular compound with the released energy

a)

Ligase

b)

somerase

c)

Hydrolase

d)

Lyase

17.

It is a test used for differentiating primary, secondary, and tertiary alcohols.

a)

Iodoform Test

b)

Lucas’ Test

c)

Ferric Chloride Test

d)

Schiffs’ Test

18.

These are molecules that have the same chemical formula but differ in the arrangement of atoms

a)

Chirality

b)

Organic Chemistry

c)

Stereochemistry

d)

Isomers

19.

An organic solvent used for preserving tissues and embalming

a)

Petroleum ether

b)

Alcohol

c)

Formaldehyde

d)

Acetone

20.

Which of the following drugs undergoes an oxidation reaction after drug metabolism?

a)

Prontosil to sulfanilamide

b)

Aspirin to salicylic acid and acetic acid

c)

Cortisone to hydrocortisone

d)

Phenacetin to paracetamol

21.

It is the oldest and considered the most accurate way of obtaining estimations of preferred molecular shape, arrangement, and characterizing the structure and bonding of compounds.

a)

Computational Chemistry

b)

Combinatorial Chemistry

c)

Screening

d)

X – ray Crystallography

22.

It is the original source of insulin

a)

Pancreas of cows

b)

Pancreas of pigs

c)

Pancreas of sheeps

d)

Pancreas of cattles

23.

It is an enzyme that has an antacid property.

a)

Pancrelipase

b)

Alteplase

c)

Diastase

d)

Sutilains

24.

It is the only immunoglobulin that is responsible for hypersensitivity reactions.

a)

IgM

b)

IgG

c)

IgA

d)

IgE

25.

Which of the following is not a component of glutathione?

a)

Glutamate

b)

Aspartate

c)

Cysteine

d)

Glutamate

26.

What is the composition of the Tollen’s Reagent?

a)

Silver nitrate, Sodium hydroxide, and Ammonia

b)

Copper sulfate and Sulfuric acid

c)

Zinc Chloride and Hydrochloric acid

d)

Rochelle Salt and Sodium Hydroxide

27.

It considers the crystal or amorphous form of the drug that can affect its dissolution rate.

a)

Physical Form

b)

Stability

c)

Partition coefficient

d)

Partition coefficient

28.

Drugs susceptibility to oxidative decomposition, protection against moisture and light in formulations are properties of drugs that should be consider in preparing a pharmaceutical product.

a)

Dissolution rate

b)

Stability

c)

Stability

d)

Drug solubility

29.

It is a type of acquired immunity where an antibody is given by injection.

a)

Naturally acquired active immunity

b)

Naturally acquired passive immunity

c)

Artificially acquired passive immunity

d)

Artificially acquired active immunity

30.

It is a prefix that pertains to 6 carbons.

a)

Valer

b)

Enanth

c)

Capro

d)

Propion

31.

It is the chemical formula of lead chromate which has a distinct yellow precipitate color.

a)

PbCrO4

b)

PbCrO7

c)

Pb2CrO4

d)

Pb2CrO7

32.

It is the chemical of silver arsenate which has a distinct reddish-brown color of the precipitate.

a)

Ag3AsO4

b)

Ag3AsO3

c)

Ag2AsO4

d)

. AgAsO4

33.

It is the main activity of sodium bismuthate in the identification of the manganese ion.

a)

Precipitating agent

b)

Reducing agent

c)

Oxidizing agent

d)

Complexing agent

34.

It is the characteristic pH that favors the precipitation of silver chloride.

a)

Neutral

b)

Acidic

c)

No change in pH

d)

Basic

35.

It is composed of water-insoluble anions produced by sodium peroxide and excess potassium hydroxide.

a)

Group 3A cations

b)

Group 2B cations

c)

Group 2A cations

d)

Group 3B cations