General Science Chemistry MCQ Quiz Questions and Answers Quiz Questions

1. Which of the following is the correct order in terms of Iron content?

A Magnetite > Haematite >Siderite > Limonite B Haematite> Magnetite >Siderite > Limonite C Haematite > Magnetite > Limonite > Siderite D Magnetite > Haematite > Limonite > Siderite

2. Which of the following methods is used to purify Titanium metal?

A Hall-Heroult process B van Arkel method C Mond process D None of the above

3. Highest percentage of nitrogen is found in which among the following fertilizers among the given options?

A Calcium ammonium nitrate B Ammonium nitrate C Calcium nitrate D Urea

4. Which among the following is known as Quick Lime?

A CaO B CaCO2 C Ca(OH)2 D CaCl2

5. Carnotite is a mineral of which among the following metals?

A Lead B Uranium C Aluminium D Iron

6. Consider the following comparisons of Diesel with Gasoline:

A Only 1 B 1 & 2 C 1, 2 & 3 D None of them

7. In which among the following respects, the white Portland cement is different from the ordinary gray Portland cement?

A Only 2, 3 & 4 B Only 1, 2 & 3 C Only 1, 2 & 4 D Only 1 & 4

8. Which of the following was discovered in Milikan’s oil drop experiment?

A Charge on a proton B Charge on an electron C Charge to mass ratio of an electron D Mass of a Hydrogen atom

9. Which of the following reactions represents changing of green colour of ferrous sulphate?

A Double Displacement reaction B Displacement reaction C Combination reaction D Decomposition reaction

10. What is the change in the rate constant for a chemical reaction when temperature rises by 10° C?

A The rate constant is constant B The rate constant is nearly doubled C The rate constant is nearly halved D The rate constant becomes four times

11. Choose the correct statement about covalent compounds?

A The forces of interaction between them is weak B They are poor conductors of electricity C Both a and b D None of the above

12. Which of these laws state that limiting molar conductivity of an electrolyte can be represented as the sum of the individual contributions of the anion and cation of the electrolyte?

A Nernst Equation B Kohlrausch law C Afbau Principle D Faraday’s law of electrolyte

13. Consider the following statements:

A Only 1 B Only 2 C Both 1 & 2 D Neither 1 nor 2

14. The patient is instructed to drink which of the following solutions before undergoing radiological examinations?

A Barium sulphate B Sodium chloride C Strontium phosphate D Germanium tetrachloride

15. What do we call the compounds formed by the linking of carbon by single bonds in between them?

A Saturated compounds B Unsaturated compounds C Monovalent compounds D Ionic compounds

16. Which of the following chemicals is used as a molecular sieve to filter common salts from seawater to produce potable water?

A Graphene oxide B Phosgene C Sodium hypochlorite D Calcium carbonate

17. Which of the following relations between Kinetic energy and Potential energy is true about solids?

A Kinetic energy = Potential energy B Kinetic energy > Potential energy C Kinetic energy >> Potential energy D Kinetic energy < Potential energy

18. What is the force that is required to produce unit elongation in a wire known as?

A Bulk modulus B Thermal strain C Thermal stress D Force constant

19. What will happen if a wire of length L is cut into two or more parts?

A each part can hold half the weight as full length wire B each part can hold the same weight as full length wire C each part can hold twice the weight as full length wire D None of the above

20. What is the general trend for atomic radii of alkali metals as we move down the group?

A it increases B it decreases C it remains constant D None of the above

21. Which of the following compound is prepared using Ostwald’s process?

A Potassium permanganate B Hydrochloric acid C Nitric acid D None

22. If we take 1 kg of iron and let it rust, and none of the rust falls off, then the total weight will be___?

A Less than 1 Kg B More than 1 Kg C Exact 1 Kg D More or Less than 1 Kg

23. From which element in the modern periodic table, the 3d transition series starts?

A Zinc B Iron C Scandium D Copper

24. Which of the following Group in the modern periodic table contains Halogens?

A Group 18 B Group 1 C Group 17 D Group 2

25. Which of the following is true about a water molecule?

A It has a bent-shaped structure B The bond angle is 120° C It is a non-polar solvent D All of the above

26. Which of the following is correct about Ionic compounds?

A They have high melting and boiling points B They are soluble in non-polar solvents C They are usually gases in nature D All of the above

27. What is the PH of human blood?

A 8.2 B 7.4 C 6.5 D 7

28. What can be the probable pH of Milk of Magnesia?

A 2 B 5.5 C 7 D 10.5

29. Which of the following is not a compound of carbon?

A Cinnabar B Acetic acid C Chloroform D Methane

30. Which of these alkanes has higher boiling point?

A Butane B Methane C Ethane D Hexane

31. Which of these is a Thermoplastic polymer?

A Terylene B Polythene C PVC D All of the above

32. Where does the oxidation takes place in a Galvanic cell?

A Anode B Cathode C Oxidation does not take place D None of the above

33. Which of the following factors affect the electronic conductance of an electrolytic solution?

A the nature of the electrolyte added B size of the ions produced and their solvation C the nature of the solvent and its viscosity D All of the above

34. What is the reason for the presence of the vast number of organic compounds in nature?

A Carbon exists in free state B Catenation property of carbon C Low atomic mass of carbon D None of the above

35. Which is the first member of Alkyne series?

A Methyne B Acetylene C Propyne D Ethene

36. Which of these polymers is formed by the polymerization of the dimer of lactic acid?

A PLA B PCL C PGA D None of the above

37. Which of the metals is most reactive out of the given options?

A Potassium B Sodium C Calcium D Magnesium

38. Which of the following would come in use to treat diseased skin surfaces?

A Analgesics B Antiseptics C Antihistamines D None of the above

39. Who was the first person to devise a periodic table of chemical elements arranged in order of their relative atomic masses?

A Dmitri Mendeleev B John Dalton C John Alexander Reina Newlands D Johann Wolfgang Dobereiner

40. Due to which of the following acids, Milk tastes sour when kept in the open for sometime?

A Lactic Acid B Citric Acid C Acetic Acid D Carbonic Acid