320 Science MCQ Questions in english

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320 Science MCQ Questions in english हिन्दी

Read science multiple choice questions for the various types of competitive exams. These science questions will help students to prepare for their exams. Improve your Science subject knowledge by reading these science questions.

68. Ionic salts may be effectively dissolved in water because:

A. It has a high boiling point

B. It has a high specific heat

C. It has no colour

D. It has a high dipole moment

67. Which one of the following is not a hydrogen isotope?

A. Yttrium

B. Protium

C. Tritium

D. Deuterium

66. Pearls' primary ingredients include

A. Aragonite and Conchiolin

B. Calcium Oxide and Ammonium Chloride

C. Calcium Carbonate and Magnesium Carbonate

D. Ammonium Sulphate and Sodium Carbonate

65. LPG mostly consists of:

A. Methane, Butane and Propane

B. Methane, Ethane and Hexane

C. Ethane, Hexane and Nonane

D. Methane, Hexane and Nonane

64. Air is an or a

A. Element

B. Electrolyte

C. Mixture

D. Compound

63. Which of the following home items uses the production of CFC gas, which is intended to be outlawed in India?

A. Tube light

B. Television

C. Cooking gas

D. Refrigerator

62. The contents of balloons include

A. Oxygen

B. Nitrogen

C. Helium

D. Argon

61. Of the following, which one does not include a coinage metal?

A. Zinc and Gold

B. Copper and Silver

C. Copper and Gold

D. Silver and Gold

60. Which of the following is one of a vascular plant's key structural axes?

A. Leaves

B. Stem

C. Flower

D. Thallus

59. An allotrope of diamond is:

A. Sulphur

B. Silicon

C. Carbon

D. Germanium

58. When fireworks are lit, the green flame results from

A. Mercury

B. Potassium

C. Barium

D. Sodium

57. Water's enduring hardness can be eliminated by adding:

A. Bleaching Powder

B. Potassium Permanganate

C. Chlorine

D. Washing Soda

56. A Marsh gas

A. Ethane

B. Hydrogen

C. Methane

D. Nitrogen

55. Which of the following describes gun metal's constituent parts?

A. Copper, Tin and Zinc

B. Iron, Zinc and Titanium

C. Iron, Brass and Tin

D. Iron and Tin

54. What material is used to make radium?a) Limestone

A. Limestone

B. Rutile

C. Haematite

D. Pitchblende

53. Describe laughing gas

A. Sulphur dioxide

B. Hydrogen peroxide

C. Nitrous Oxide

D. Carbon monoxide

52. The elements with atomic numbers starting with actinides are

A. 101 to 115

B. 89 to 103

C. 36 from 43

D. 97 to 104

51. The following two substances are typically used to create transistors:

A. Silicon and Germanium

B. Iridium and Tungsten

C. Niobium and Columbium

D. Boron and Aluminium

50. The most significant aluminium ore is

A. Calcite

B. Galena

C. Bauxite

D. Calamine

49. What is most soluble in water?

A. Sugar

B. Camphor

C. Sulphur

D. Common salt

48. Which of the following was the first to be found in the sun's chromospheres?

A. Neon

B. Krypton

C. Helium

D. Xenon

47. Which of the following is liquid when the temperature is ambient?

A. Sodium

B. Francium

C. Cerium

D. Lithium

46. The metal sodium is stored under:

A. Water

B. Alcohol

C. Kerosene

D. Petrol

45. The mineral monazite is a

A. Zirconium

B. Thorium

C. Titanium

D. Iron

44. Together, carbon, diamond, and graphite are known as:

A. Isomorphs

B. Isotopes

C. Isomers

D. Allotrope

43. Uses for potassium nitrate include

A. Fertilizer

B. Salt

C. Glass

D. Medicine

42. Water's enduring hardness can be reduced by adding:

A. Lime

B. Sodium Carbonate

C. Potassium Permanganate

D. Alum

41. soda water includes

A. Sulphuric acid

B. Carbon dioxide

C. Carbonic acid

D. Nitrous acid

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320 Science MCQ Questions in english हिन्दी

68. Ionic salts may be effectively dissolved in water because:

67. Which one of the following is not a hydrogen isotope?

66. Pearls' primary ingredients include

65. LPG mostly consists of:

64. Air is an or a

63. Which of the following home items uses the production of CFC gas, which is intended to be outlawed in India?

62. The contents of balloons include

61. Of the following, which one does not include a coinage metal?

60. Which of the following is one of a vascular plant's key structural axes?

59. An allotrope of diamond is:

58. When fireworks are lit, the green flame results from

57. Water's enduring hardness can be eliminated by adding:

56. A Marsh gas

55. Which of the following describes gun metal's constituent parts?

54. What material is used to make radium?a) Limestone

53. Describe laughing gas

52. The elements with atomic numbers starting with actinides are

51. The following two substances are typically used to create transistors:

50. The most significant aluminium ore is

49. What is most soluble in water?

48. Which of the following was the first to be found in the sun's chromospheres?

47. Which of the following is liquid when the temperature is ambient?

46. The metal sodium is stored under:

45. The mineral monazite is a

44. Together, carbon, diamond, and graphite are known as:

43. Uses for potassium nitrate include

42. Water's enduring hardness can be reduced by adding:

41. soda water includes

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