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Nature and Composition of Substances Quiz (Part - I)

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Chemistry questions are often asked in many exams like SSC CGL, Intelligence Bureau, and other various competitive exams so here are some chemistry questions to practice from the topic Nature and composition of substances (Part - I).







Q1. Who is known as the father of modern chemistry?

Priestly
Lavoisier
Dalton
Mendeleev

Q2. Who discovered transuranic elements?

Hahn
Rutherford
Seaborg
Curie

Q3. Which among these is not an element?

Diamond
Ozone
Silica
Graphite

Q4. Who stated that matter can be converted into energy?

Boyle
Lavoisier
Avogadro
Einstein

Q5. Who stated the law of constant proportion?

Dalton
Berthelot
Avogadro
Proust

Q6. Consider the following elements? 
 A. Copper 
 B. Gold 
 C. Platinum
 D. Silver
 Which of the following elements exists in free nature?

A and B
B and C
A, B, and D
C and D

Q7. The product of equivalent weight and valency of an element is equal to?

Vapour Density
Specific Heat
Atomic Weight
Molecular Weight

Q8. Milk is a/an?

Mixture
Element
Metal
None of the above

Q9. Which among the following is a pure element?

Glass
Cement
Sodium
None of the above

Q10. Diamond is a/an?

Element
Compound
Mixture
Liquid

Q11. Who introduced the M.K.S system?

Archimedes
Einstein
Newton
Giorgi

Q12. A mixture of sand and naphthalene can be separated by?

Fractional Distillation
Sublimation
Chromatography
Any of them

Q13. Gas is found to have the formula (CO)n. Its vapor density is 70. The value of n must be?

5
4
9
6

Q14. The equivalent weight of the compound is the weight of it that combines with or displaces directly __?
 A. 1.008 part by weight of hydrogen
 B. 16 parts by weight of nitrogen
 C. 35.45 part by weight of chlorine.

 Which among the following statement is correct?

A, B, and C
A and B
B and C
A and C

Q15. A bar is a unit of?

Pressure
Force
Energy
Frequency

Q16. Which among the following is not a mixture?

Air
Mercury
Milk
Cement

Q17. Oxygen and ozone are?

Allotopes
Isomers
Isotopes
Isobars

Q18. Which among the following mixture is homogeneous?

Starch and Sugar
Methanol and Water
Graphite and Charcoal
Calcium Carbonate and Calcium Bicarbonate

Q19. How many elements are there in Na?

1
10
11
12

Q20. How many molecules are there in 140 g of Si (the atomic mass of silicon is 28)?

5
10
28
140

Q21. What are the elements present in urea?

C, H, O
C, N, O
C, N, H
C, O, N, H




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