General Science | Chemistry

Practice General Science | Chemistry on Bissoy — browse topics below and open any question.

Basic Concepts of Chemistry Chemical Bond and Molecular Structure Chemical Reaction Chemistry in Everyday Life Classification of Elements and Periodicity in Properties Electrochemistry Environmental Chemistry Equilibrium Hydrocarbons Organic Chemistry Periodic Table Solutions States of Matter Structure of Atom Surface Chemistry

Questions

Which of the following is the lightest metal?

ক

Mercury

খ

Silver

গ

Lithium

ঘ

Iron

Which of the following is not a metal?

ক

Gold

খ

Diamond

গ

Silver

ঘ

Copper

Which of the following is used in pencils?

ক

Graphite

খ

Silicon

গ

Charcoal

ঘ

Phosphorous

Which one is not Correct?

ক

A + 0=A

খ

a.1=A

গ

A + A'=1

ঘ

A.A'=1

Which statement is not true?

ক

The attackers were suicide bombers too.

খ

Bataclan is the name of a concert hall.

গ

Paris had some similar attacks after World War-II

ঘ

Not all attackers marched into a rock concert

What is dry Ice?

ক

Sokid Oxygen

খ

Solid Carbon Dioxide

গ

Solid Hydrogen

ঘ

Solid Nitrogen

What is an alloy?

ক

Metals melted in liquid form.

খ

Industrial meterials which are not very good

গ

A planned combination of materials for a specifice purpose.

ঘ

Impure materials that occur accidentally.

Find the odd one:

ক

and

খ

or

গ

since

ঘ

read

Which of the following is a colligative property?

ক

Relative lowering of fluid pressure

খ

Decrease in boiling point

গ

Decrease in freezing point

ঘ

Change in volume after mixing

Which of the following is the correct order of reactivity of metals?

ক

Zn > Mg > Fe > Cu > Ag

খ

Zn > Mg > Fe > Ag > Cu

গ

Mg > Zn > Fe > Ag > Cu

ঘ

Mg > Zn > Fe > Cu > Ag

Which of the following is radioactive in nature?

ক

Oxygen

খ

Sulphur

গ

Tellurium

ঘ

Polonium

Which of the following has the highest atomic number?

ক

Scandium

খ

Titanium

গ

Cadmium

ঘ

Lanthanum

Which of the following has the highest density?

ক

Os

খ

Zn

গ

Cr

ঘ

Cd

Which of the following element has the highest melting point?

ক

Co

খ

Zn

গ

Ni

ঘ

Cr

Identify the correct statement.

ক

Peptide bond is formed by the loss of water molecule

খ

A protein is made of only one type of amino acid

গ

Dipeptides consists of different amino acids

ঘ

Glycylalanine is a tripeptide

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