Science MCQ Questions with answers

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Here Important Science MCQ questions are added which are frequently asked in almost all the examinations. You can check the correct answer of any question on clicking the show answer button. The Correct answer will be displayed below. You can share any question with your friends on whatsapp by tapping Share button.

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Q. Who invented 'safety pin'?

  • (A) William Hunt (U.S.)
  • (B) Charles Fredrick Wiesenthal (US)
  • (C) J.C. Perier (France)
  • (D) Sir Richard Arkwright (England)
📝 Notes
✅ Correct Answer: (A) William Hunt (U.S.)

Published by Jatin Dubey ⭐ 3.78K Points at 18-Dec-2022 11:23 am in Science

Q. Which one of the following types of coal is difficult to light in the open air?

  • (A) Anthracite
  • (B) Bituminous
  • (C) Lignite
  • (D) Peat
📝 Notes
✅ Correct Answer: (D) Peat

Published by Jatin Dubey ⭐ 3.78K Points at 18-Dec-2022 11:23 am in Science

Q. The oesophagus and lining of the mouth are also covered with ......... ?

  • (A) Squamous epithelium
  • (B) Ciliated epithelium
  • (C) Columnar epithelium
  • (D) Glandular epithelium
📝 Notes
✅ Correct Answer: (A) Squamous epithelium
Explanation: The oesophagus and lining of the mouth are also covered with Squamous epithelium

Published by Ram Avtar Sharma ⭐ 4.50K Points at 07-Sep-2024 08:52 am in Science

Q. What is the third proportional to 9 and 12 ?

  • (A) 19
  • (B) 16
  • (C) 18
  • (D) 17
📝 Notes
✅ Correct Answer: (B) 16

Published by Uday Singh ⭐ 8.97K Points at 07-Sep-2024 04:36 pm in Science

Q. ......... tissue is found beneath the skin, around the kidneys and between the internal organs ?

  • (A) Ligament
  • (B) Areolar
  • (C) Tendons
  • (D) Adipose
📝 Notes
✅ Correct Answer: (D) Adipose
Explanation: Adipose tissue is commonly known as body fat. It is found all over the body. It can be found under the skin (subcutaneous fat), packed around internal organs (visceral fat), between muscles, within bone marrow

Published by Ram Sharma ⭐ 193.88K Points at 23-Feb-2025 02:19 pm in Science

Q. The kinetic energy acquired by a mass (m) in traveling distance starting from rest under the action of constant force is directly proportional to ?

  • (A) 1/m
  • (B) m°
  • (C) m
  • (D) 1/?m
📝 Notes
✅ Correct Answer: (B) m°
Explanation: Work done by external forces = Change in kinetic energy Since particle starts from rest, its initial Kinetic Energy is 0. Therefore, K.E.=Fd It is given that force is constant. We see that Kinetic energy is independent of mass

Published by Rakesh Kumar ⭐ 28.44K Points at 23-Feb-2025 02:19 pm in Science

Q. A 5 ? resistance wire is doubled on it. Calculate the new resistance of the wire ?

  • (A) 1.25 ?
  • (B) 2.25 ?
  • (C) 1.5 ?
  • (D) 1.00 ?
📝 Notes
✅ Correct Answer: (A) 1.25 ?
Explanation: Resistance (R) = 5 ? The Resistance of wire = R = p L / A When the wire is doubled, its length becomes half, and the area of cross-section is doubled = R = p L / A = p L/2 / 2A = 1/4 p L / A = = 1.25 ? New Resistance

Published by Vijay Sangwan ⭐ 28.62K Points at 23-Feb-2025 02:19 pm in Science

Q. Which of the following represents the equation for position-time relation ?

  • (A) 2as = v2 – u2
  • (B) s = ut + 1/2at2
  • (C) v = u + at
  • (D) V = u + at
📝 Notes
✅ Correct Answer: (B) s = ut + 1/2at2
Explanation: s = ut + 1/2at2 shows the relation between position and time

Published by Admin ⭐ 38.37K Points at 23-Feb-2025 02:19 pm in Science

Q. The SI unit of electric charge is _______ ?

  • (A) Wait
  • (B) Ohm
  • (C) Amphere
  • (D) Coulomb
📝 Notes
✅ Correct Answer: (D) Coulomb
Explanation: The SI unit of electric charge is Coulomb (C). Ampere is the SI unit of electric current. Volt is the unit of electric potential difference. Joule is the unit of energy

Published by Vijay Sangwan ⭐ 28.62K Points at 23-Feb-2025 02:19 pm in Science

Q. ......... is least reactive element belonging to group 17 ?

  • (A) Bromine
  • (B) Iodine
  • (C) Chlorine
  • (D) Fluorine
📝 Notes
✅ Correct Answer: (B) Iodine
Explanation: Iodine is the least reactive element belonging to group 17. The 5 non-metallic, toxic elements that form group 17 of the periodic table are iodine, chlorine, fluorine, bromine, and astatine

Published by Praveen Singh ⭐ 36.81K Points at 23-Feb-2025 02:19 pm in Science

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