Basic Concepts Of Chemistry

Question 1

1foot = … inches

Answer 1

12 inches

Question 2

1 inch = …. cm

Answer 2

2.54cm

Question 3

1 kg = … lbs

Answer 3

2.205 lbs

Question 4

1 amu = ….. g

Answer 4

1.67 x 10^-24g

Question 5

Pounds is denoted by

Answer 5

lbs

Question 6

1 calorie = …… joules

Answer 6

4.2

Question 7

1 joule = ……ergs

Answer 7

10^7

Question 8

1 litre atmosphere = ….. joules

Answer 8

101.3 joules

Question 9

1 eV = …. joules

Answer 9

1.602 x 10^-19 joules

Question 10

1 atm = … torr

Answer 10

760 torr (760mm of Hg)

Question 11

1 atm = … Pa

Answer 11

1.013 x 10^5 pascals

Question 12

STP vs NTP

Answer 12

STP - 1 bar

NTP - 1 atm

Question 13

1 bar = ….. Pa

Answer 13

10^5 Pa

Question 14

Law of gaseous volume given by

Answer 14

Gay Lussac’s

Question 15

Law of multiple proportion given by

Answer 15

Dalton

Question 16

Gram molecular volume of a gas

Answer 16

22.4 litres

Question 17

Atom is a …. word meaning …..

Answer 17

Greek

Indivisible

Question 18

Which isotope of H is radioactive

Answer 18

Tritium

Question 19

Isobars given by

Answer 19

Aston

Question 20

Isodiaphers

Answer 20

Same difference in the no of neutrons and protons

Question 21

Isotones/Isoneutronic species /isotonic species

Answer 21

Same no of neutrons

Question 22

Isosters

Answer 22

Molecules having same no atoms as well as electrons

Question 23

Daltons atomic theory

Answer 23

1808

Question 24

Gay Lussac’s law

Answer 24

1808

Question 25

First international conference on chemistry

Answer 25

1860

Question 26

Law of conservation of mass

Answer 26

1789

Question 27

Law of multiple proportions

Answer 27

1803

Question 28

Avogadro’s law

Answer 28

1811

Question 29

C-12 agreed as standard for atomic masses on

Answer 29

1961