Chemistry/Chemistry MCQ Questions Set-2 Sample Test,Sample questions

Question:
A gas absorbs a photon of 355 nm and emits at two wavelengths. If one of the emissions is at 680 nm the other is at :

1. 518 nm

2.1035 nm

3.325 nm

4.743 nm

Posted Date:-2021-06-30 13:21:48


Question:
A pure substance can only be

1.Compound

2.an element

3.an element or a compound

4. a heterogeneous mixture

Posted Date:-2021-06-30 13:21:48


Question:
A radioactive substance has a half life of four months three-fourth of the substance would decay in

1.3 months

2.4 months

3.8 months

4.12 months

Posted Date:-2021-06-30 13:21:48


Question:
An atom has 7 electrons in its M - shell and contains 18 neutrons in its nucleus. What is its mass number

1.25

2.27

3.35

4.43

Posted Date:-2021-06-30 13:21:48


Question:
An element which is preserved under water is 

1.sodium

2.sulphur

3. red phosphorus

4.white phosphorus

Posted Date:-2021-06-30 13:21:48


Question:
Electromagnetic radiation with maximum wavelength is

1.ultraviolet

2.radio waves

3.x-rays

4.infrared

Posted Date:-2021-06-30 13:21:48


Question:
Ethanol is converted into ethoxy ethane

1.by heating excess of ethanol with conc. H2SO4 at 140 C

2.by treating with conc. H2SO4 at room temperature

3. by treating with conc. H2SO4 at 273 K

4.by heating Ethanol with excess of conc. H2SO4 at 443 K

Posted Date:-2021-06-30 13:21:48


Question:
Ethylene glycol is used as an antifreeze in a cold climate. Mass of ethylene glycol which should be added to 4 kg of water to prevent it from freezing at –6 C will be: (Kf  for 

1.204.60 g

2.304.30 g

3.804.32 g

4.400.00 g

Posted Date:-2021-06-30 13:21:48


Question:
he credit for the discovery of transuranic element goes to

1.Hahn

2.Rutherford

3.Seaborg

4.Curie

Posted Date:-2021-06-30 13:21:48


Question:
Heated saw dust catches fire when a drop of concentrated nitric acid is added to it. This is due to

1.dehydration

2.oxidation

3.reduction

4.dehydrogenation

Posted Date:-2021-06-30 13:21:48


Question:
How many moles are there in 140g of Si (atomic mass of silicon is 28)

1.5

2.10

3.28

4.140

Posted Date:-2021-06-30 13:21:48


Question:
In a face centred cubic lattice atom A occupies the corner positions and atom B occupies the face centre positions. If one atom of B is missing from one of the face centred points the formula of the compound is

1) A2B5
2) A3B2
3) A2B3
4) A3B4

1.Option 1

2.Option 2

3.Option 3

4.Option 4

Posted Date:-2021-06-30 13:21:48


Question:
In known elements the maximum number is of

1.Metals

2.Non Metals

3.Metalloids

4. None of these

Posted Date:-2021-06-30 13:21:48


Question:
In nuclear reactorChain reaction is controlled by introducing

1.cadmium rod

2.iron rod

3.platinum rod

4. graphite rod

Posted Date:-2021-06-30 13:21:48


Question:
Li3PO4 compound name?

1.Lithium perchlorate

2.Lithium phyrite

3.Lithium phosphate

4.None

Posted Date:-2021-06-30 13:21:48


Question:
Most commonly used bleaching agent is

1.Chlorine

2.Alcohol

3.Carbon dioxide

4. Sodium Chloride

Posted Date:-2021-06-30 13:21:48


Question:
Natural Rubber is a Polymer of

1.butadiene

2.2methyl-13butadiene

3.ethylene

4.isoprene

Posted Date:-2021-06-30 13:21:48


Question:
Orlon is a polymer of

1.Dacron

2.Acrylonitrile

3.Polyamide Nylon

4.None of the above

Posted Date:-2021-06-30 13:21:48


Question:
Positive ions are formed from neutral atoms by loss of

1.neutrons

2.protons

3.nuclear charge

4.electrons

Posted Date:-2021-06-30 13:21:48


Question:
The bleeding of a wound is stopped by the application of ferric chloride because_____

1.Ferric chloride seals the blood vessels

2.Blood starts flowing in the opposite direction

3.Blood reacts and a solid is formed which seals the blood vessels

4.Blood is coagulated and the blood vessels are sealed

Posted Date:-2021-06-30 13:21:48


Question:
The difference between a nuclear reactor and atomic bomb is that ___________

1. no chain reaction takes place in nuclear reactor while in the atomic bomb there is a chain reaction

2.the chain reaction in nuclear reactor is controlled

3.the chain reaction in nuclear reactor is not controlled

4.no-chain reaction takes place in atomic bomb while it takes place in nuclear reactor

Posted Date:-2021-06-30 13:21:48


Question:
The freezing point of water at 760mm pressure is

1.0 K

2.273 K

3.273 C

4. -273 C

Posted Date:-2021-06-30 13:21:48


Question:
The fundamental particles present in equal numbers in neutral atoms are
 

1.protons and electrons

2.neutrons and electrons

3.protons and neutrons

4.protons and positrons

Posted Date:-2021-06-30 13:21:48


Question:
The isotopes of chlorine with mass number 35 and 37 exist in the ratio of

1. 1:2

2.2:03

3.3:01

4.3:04

Posted Date:-2021-06-30 13:21:48


Question:
The law of constant proportions was enunciated by

1.Dalton

2.Berthelot

3.Avogadro

4.Proust

Posted Date:-2021-06-30 13:21:48


Question:
The metal which reacts most violently with with cold water is

1.calcium

2.sodium

3.magnesium

4.potassium

Posted Date:-2021-06-30 13:21:48


Question:
The Most Abundant Rare Gas in the Atmosphere is

1.Xe

2.He

3.Ne

4.Ar

Posted Date:-2021-06-30 13:21:48


Question:
The nitrogen atom has 7 protons and 7 electronsThe nitride ion will have

1.10 protons and 7 electrons

2. 7 protons and 10 electrons

3.4 protons and 7 electrons

4.4 protons and 10 electrons

Posted Date:-2021-06-30 13:21:48


Question:
The particle with 13 protons and 10 electrons is

1.Al -atom

2. Al3+ ion

3.nitrogen isotope

4.None of these

Posted Date:-2021-06-30 13:21:48


Question:
The presence or absence of hydroxy group on which carbon atom of sugar differentiates RNA and DNA ?

1.4th

2.2nd

3.3rd

4.1st

Posted Date:-2021-06-30 13:21:48


Question:
What are long chains of Carbon Molecules called

1.Ribosomes

2.Hydrocarbons

3.Polymers

4.None

Posted Date:-2021-06-30 13:21:48


Question:
What is the conjugate base of H2O?

1.NH3+

2.OH

3.H2O

4.All the above

Posted Date:-2021-06-30 13:21:48


Question:
What is the IUPAC name of [Co(NH3)4Cl2]?

1.Tetra-ammine dichloro cobalt (III) chloride

2.Tetra-ammine trichloro cobalt (III)

3. Tri-ammine dichloro cobalt (III) chloride

4.Tetra-ammine dichloro cobalt

Posted Date:-2021-06-30 13:21:48


Question:
What is the simplest form of matter?

1.Element

2.Molecule

3.Atom

4.Compound

Posted Date:-2021-06-30 13:21:48


Question:
Which acid is produced when milk gets sour?

1.Lactic acid

2.Acetic acid

3.Tartaric acid

4.Butyric acid

Posted Date:-2021-06-30 13:21:48


Question:
Which combination of atoms can form a polar covalent bond?

1. H and Br

2.H and H

3.Na and Br

4.N and N

Posted Date:-2021-06-30 13:21:48


Question:
Which is the gas used for making vegetables and vanaspathi from vegetable oils?

1.Hydrogen

2.Nitrogen

3.Argon

4.Helium

Posted Date:-2021-06-30 13:21:48


Question:
Which Noble Gas has the highest First Ionization Energy?

1.Neon

2.Helium

3.Argon

4.Xenon

Posted Date:-2021-06-30 13:21:48


Question:
Which of the following carbon compounds is used as a fire- extinguisher?

1.Carbon disulphide

2.Chloroform

3.Carbon tetrachloride

4.Methyl ene chloride

Posted Date:-2021-06-30 13:21:48


Question:
Which of the following is the strongest acid?

1.ClCH2COOH

2.BrCH2COOH

3.FCH2COOH

4.ICH2COOH

Posted Date:-2021-06-30 13:21:48


Question:
Which of these molecules are polar? Check all that apply.

1.SO2

2.CH2Cl2

3.PCl3

4.All the above

Posted Date:-2021-06-30 13:21:48


Question:
Which one among the following is the heaviest

1.1 mole of water molecules

2.1 mole of ammonia molecules

3.1 mole of sodium atoms

4. 1 mole of hydrogen molecules

Posted Date:-2021-06-30 13:21:48


Question:
Which one is not metal

1.sulpher

2.sugar

3.nitogen

4.all of these

Posted Date:-2021-06-30 13:21:48


Question:
Which one is the pure element

1.glass

2.cement

3.sodium

4.None of these

Posted Date:-2021-06-30 13:21:48


Question:
Which one of the following can be used to confirm wether drinking water contains a gamma emitting isotope or not

1.Microscope

2.Scintillation counter

3.Lead plate

4.pectrophotometer

Posted Date:-2021-06-30 13:21:48


Question:
Which one of the following elements is the poorest conductor of heat

1.sodium

2.lead

3.zinc

4.mercury

Posted Date:-2021-06-30 13:21:48


Question:
Which one of the following is a natural colloid ?

1.Cane sugar solution

2.Blood

3.Sodium chloride solution

4.Urea solution

Posted Date:-2021-06-30 13:21:48


Question:
Which one of the following is used to induce artificial rain ?

1.Potassium Nitrate

2.Ammonium chloride

3.Calcium carbonate

4. Silver lodide

Posted Date:-2021-06-30 13:21:48


Question:
Which solution has the highest pH?

1.50.0 mL 0.0500 M calcium hydroxide Ca(OH)2 (aq)

2.50.0 mL 0.0500 M sodium hydroxide NaOH (aq)

3.50.0 mL 0.0500 M nitric acid HNO3 (aq)

4.50.0 mL 0.0500 M nitrous acid HNO2 (aq)

Posted Date:-2021-06-30 13:21:48


Question:
Who is the father of modern chemistry?

1.Priestley

2.Lavoisier

3.Dalton

4.Mendeleeff

Posted Date:-2021-06-30 13:21:48


More MCQS

  1. Nobel Prizes in Chemistry
  2. G.K Question and Answer - Chemistry MCQs Set I
  3. G.K Question and Answer - Chemistry MCQs Set II
  4. G.K Question and Answer - Chemistry MCQs Set III
  5. G.K Question and Answer - Chemistry MCQs Set IV
  6. G.K Question and Answer - Chemistry MCQs Set V
  7. G.K Question and Answer - Chemistry MCQs Set VI
  8. Chemistry MCQ Questions Set-1
  9. Chemistry MCQ Questions Set-2
  10. Chemistry MCQ Questions Set-3
  11. Chemistry MCQ Questions Set-4
  12. Chemistry MCQ Questions Se-9
  13. Chemistry MCQ Questions Set-10
  14. Chemistry MCQ Questions Set-11
  15. Chemistry MCQ Questions Set-12
  16. Chemistry MCQ Questions Set-13
  17. Chemistry MCQ Questions set-8
  18. Chemistry MCQ Question -Periodic Classification
  19. Chemistry MCQ Question - Basic Concept
  20. Chemistry MCQ Question - Electrochemistry
  21. Chemistry MCQ Question - Environmental Chemistry
  22. Chemistry MCQ Question - BLOCK ELEMENTS
  23. Chemistry MCQ Question - ThermoChemistry
  24. Chemistry MCQ Question - Aliphatic Hydrocarbons
  25. Chemistry MCQ Question - Experimental Techniques
  26. Chemistry MCQ Question - Macromolecules
  27. Chemistry MCQ Question - MCAT ECAT Chemistry Paper
  28. Chemistry MCQ Question - Aromatic Hydrocarbons
  29. Chemistry MCQ Question - Atomic Structure
  30. Chemistry MCQ Question - Chemical Equilibrium
  31. Chemistry MCQ Question - Reaction Kinetics
  32. Chemistry MCQ Question - Transition Elements
  33. Chemistry MCQ Question - Aldehydes and Ketones
  34. Chemistry MCQ Question - Common Chemical Industries
  35. Chemistry MCQ Question - Atomic
  36. Chemistry MCQs Set 1
  37. Chemistry MCQs
  38. Chemistry MCQ for 7-8th Class
  39. Chemistry MCQ for 9-10th Class
  40. Chemistry MCQs
Search
R4R Team
R4Rin Top Tutorials are Core Java,Hibernate ,Spring,Sturts.The content on R4R.in website is done by expert team not only with the help of books but along with the strong professional knowledge in all context like coding,designing, marketing,etc!