General Science Questions (MCQs) for Competitive Examinations

Good News…!!! Here is the Important General Science Multiple choice questions for GK paper in SSC, NDA, CDS, UPSC, UPPSC, State PSC Exam and other Competitive/Govt Job/Entrance Examinations. So every one can find objective type General Knowledge General Science questions and answers for exam preparation.

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General Science Question and Answers

1.Which among the following is popularly called Hypo?

[A] Silver Bromide
[B] Silver nitrate
[C] Sodium thiosulphate
[D] Sodium phosphate

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Answer: C [Sodium thiosulphate ]

2.“Atoms can neither be created nor destroyed.” This principle was given by __?

[A] Avogadro
[B] Dalton
[C] Rutherford
[D] Niels Bohr

Answer: B [Dalton]

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3.The most common use of ‘silicone hydrogels’ is making of which among the following?

[A] Surgery Equipments
[B] Contact Lenses
[C] Breast Transplants
[D] Capsules of medicines

Answer: B [Contact Lenses]

4.Which compound of mercury is used as antiseptic?

[A] Mercuric sulphide
[B] Mercuric oxide
[C] Mercuric chloride
[D] Mercuric iodide

Answer: C [Mercuric chloride]

5.Which among the following is major component of Gobar Gas?

[A] Butane
[B] Ethane
[C] Propane
[D] Metahne

Answer: D [Metahne]

6.Which among the following chemicals is used in Photography?

[A] Silver Bromide
[B] Potassium Chloride
[C] Sodium Bromide
[D] Magnesium Chloride

Answer: A [Silver Bromide]

7.Which among the following cells is capable to develop in any of the type of cell?

[A] Endothelial
[B] Endodermal
[C] Stem
[D] None of the above

Answer: C [Stem]

8.Which of the following disease is found in ground nut?

[A] Downy mildew
[B] Bunt
[C] Ikki
[D] None of the above

Answer: C [Ikki]

9.In which part of the human body “Pleura” is found?

[A] Lungs
[B] Brain
[C] Liver
[D] Heart

Answer: A [Lungs]

10.The instrument that measures arterial blood pressure is known as :

[A] Pyknometer
[B] Hypsometer
[C] Sphygmoscope
[D] Sphygmomanometer

Answer: D [Sphygmomanometer]

11.Consider the following microorganisms: 

  1. Viruses
  2. Bacteria
  3. Fungi

Which of the above is/are responsible for Biological Nitrogen Fixation?

[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 1 & 3
[D] 1, 2 & 3

Answer: B [ Only 2 & 3]

12. Consider the following statements:

1. Tendons join muscle to bone
2. Ca++ ions are necessary for normal muscle contraction
3. A single muscle cell is very large, multinucleated cell

Which among the above is / are correct statements?

[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 1 & 3
[D] 1, 2 & 3

Answer: D [ 1, 2 & 3]

13. Consider the following statements with respect to types of cell division:

  1. While in mitosis cell divide is asexual reproduction, meiosis is sexual reproduction
  2. While in mitosis number of chromosomes reduce to half, in meiosis number of chromosome remain same

Which of the above statements is/are correct?

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

Answer: A [ 1 Only]

14. Consider the following statements about the disease “Mad Cow”:

  1. The disease is an  infectious viral disease of cattle
  2. Megavirus (MGVC) is mainly responsible for the disease

Which of the above statements is/are correct?

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

Answer: D [ Neither 1 nor 2]

15. The roots of which of the following plants are home to a variety of Nitrogen fixation bacteria?

  1. Pea
  2. Sugarcane
  3. Sugarbeet

Select the correct option from the codes given below:

[A] Only 1
[B] Only 1 & 2
[C] Only 1 & 3
[D] 1, 2 & 3

Answer: A [ Only 1]

16. Which of the following diseases is / are genetic disorders?

  1. Huntington’s disease
  2. Cystic fibrosis (CF)
  3. Sickle-cell disease

Select the correct option from the codes given below:

[A] 1 & 2 Only
[B] 1 & 3 Only
[C] 2 & 3 Only
[D] 1, 2 & 3

Answer: D [ 1, 2 & 3]

17. The vaccine, mycobacterium indicus pranii (MIP), which has been developed in India, is associated with prevention of which disease?

[A] Tuberculosis
[B] Diphtheria
[C] Leprosy
[D] Pneumonia

Answer: C [ Leprosy]

18. Consider the following differences between plant cell and animal cell:

  1. While plastids are usually present in plant cells, they are absent in animal cells
  2. While lysosomes are rare in plant cells, they are found in almost all animal cells

Which of the above statements is/are correct?

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

Answer: C [Both 1 & 2]

19. Power of lens is measured in which of the following units?

[A] metre
[B] dioptre
[C] lumen
[D] watt

Answer: B [ dioptre ]

20. Which of the following statements is correct?

[A] Bulk stress occurs only in liquids
[B] Longitudinal stress occurs only in solids
[C] Both a and b
[D] None of the above

Answer: B [Longitudinal stress occurs only in solids]

21. What do the dots represent in the Lewis dot structures?

[A] positrons
[B] electrons
[C] atoms
[D] neutrons

Answer: B [electrons]

22. Which of the following gas is liberated when a metal reacts with an acid?

[A] Oxygen
[B] Hydrogen
[C] Carbon dioxide
[D] Nitrogen

Answer: B [Hydrogen]

23. What are the structures formed by the soap molecules, during cleansing, known as?

[A] Stereates
[B] Esters
[C] Micelles
[D] Tubes

Answer: C [Micelles]

24. Opium is a plant product obtained from which part of the plant?

[A] Roots
[B] Stem bark
[C] Dried Latex
[D] Dried leaves

Answer: C [Dried Latex]

25. Which of the following is the largest cell in mammalian blood?

[A] Erythrocytes
[B] Monocytes
[C] Lymphocytes
[D] Basophils

Answer: B [Monocytes]

26. Which among the following is not an example of emulsion?

[A] Butter
[B] Chocolate-Milk
[C] Curd
[D] Whipped Cream

Answer: C [Curd]

27. Which of the following disease is non-communicable in nature?

[A] Tuberculosis
[B] Chicken-pox
[C] Cholera
[D] Cancer

Answer: D [Cancer]

28. Alveoli is related to which of the following system of human body?

[A] Excretory system
[B] Respiratory system
[C] Circulatory system
[D] Reproductive system

Answer: B [Respiratory system]

29. Which of the following is also known as Carbolic Acid?

[A] Ethanol
[B] Phenol
[C] Hydroxide
[D] Sulphuric Acid

Answer: B [Phenol]

30. Which problem of human body can be treated by the process of Dialysis?

[A] Kidney trouble
[B] Liver trouble
[C] Lung trouble
[D] Bronchitis

Answer: A [Kidney trouble]

31. Choose the correct statement:

[A] Tooth enamel is made up of calcium phosphate
[B] Tooth decay starts when the pH of the mouth is lower than 5.5
[C] Both a and b
[D] None

Answer: C [Both a and b]

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

[D] None of the above

Answer: A [PLA]

33. Which of these non-metals is commonly used as a general anesthetic?

[A] Helium
[B] Tellurium
[C] Xenon
[D] Fluorine

Answer: C [ Xenon ]

34. Which of these chemical is used to form soaps containing sodium salts?

[A] Sulphuric acid
[B] Sodium hydroxide
[C] Nitric acid
[D] Carbonic acid

Answer: B [Sodium hydroxide]

35. Which of the following functions is performed by the kidneys in the human body?

[A] Transportation
[B] Excretion
[C] Respiration
[D] Digestion

Answer: B [Excretion]

36. RBCs are formed in which of the following in the adults?

[A] black bone marrow
[B] white bone marrow
[C] red bone marrow
[D] blue bone marrow

Answer: C [red bone marrow]

37. Who among the following is considered to be the father of neuroscience?

[A] Santiago Ramón y Cajal
[B] James Black
[C] Erwin Chargaff
[D] Jacques Cousteau

Answer: A [Santiago Ramón y Cajal]

38. Who is known as the ‘Father of Bacteriology’?

[A] Louis Pasteur
[B] Leeuwenhoek
[C] Robert Hooke
[D] Edward Jenner

Answer: A [Louis Pasteur]

39. What is the plant cell wall mainly made of?

[A] Protein
[B] Cellulose
[C] Lipid
[D] Starch

Answer: B [Cellulose]

40. What is the common name of pteridophytes?

[A] Ferns
[B] conifers
[C] flowering plant
[D] None of these

Answer: A [Ferns]

41. Which of the following is an example of a basic nervous system function?

[A] Remembering a painful experience
[B] Sweating during a yoga class
[C] Feeling afraid of the dark
[D] Learning English as a second language

Answer: B [Sweating during a yoga class]

42. How many types of joints are present in our body?

[A] 2
[B] 3
[C] 5
[D] 6

Answer: B [3]

43. How many types of antibodies are there?

[A] Five
[B] Three
[C] Two
[D] Four

Answer: A [Five]

44. The malpighian body consists of:

[A] glomerulus and Bowman’s capsule
[B] proximal convoluted tubule
[C] Henle’s loop
[D] Both 2 and 3

Answer: A [glomerulus and Bowman’s capsule]

45. The nutritive medium for the ejaculated sperms is given by which of the following?

[A] fallopian tube
[B] vaginal fluid
[C] seminal fluid
[D] uterine lining

Answer: C [seminal fluid]

46. AIDS, Polio, Measles, Influenza are some examples of infections caused by which of the following?

[A] Virus
[B] Bacteria
[C] Protozoan
[D] Fungi

Answer: A [Virus]

47. Which of the following virus is also known as the common cold?

[A] Variola virus
[B] Rhinovirus
[C] Varicella zoster Virus
[D] Myxovirus

Answer: B [Rhinovirus]

48. Which of the following is an example of Phenotype?

[A] Eye color
[B] Sound of your voice
[C] Hair color
[D] All of the above

Answer: D [All of the above]

49. What is the aerobic digestion of sewage used to produce?

[A] Biomass
[B] Biofuels
[C] Synthetic fuels
[D] Metal articles

Answer: B [Biofuels]

50. Transgenic plants have desirable traits like __

[A] harmful genes
[B] herbicide resistance
[C] lactose intolerance
[D] complementary genes

Answer: B [herbicide resistance]

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