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1 Physics MCQs

Which type of radiation has the most energetic (strongest) photons?

  • X-Rays
  • Gamma rays
  • Microwaves
  • Electromagnetic waves
0 Comments
Correct Answer: B. Gamma rays

Explanation:

Electromagnetic radiation consists of waves of electric and magnetic fields that travel through ... Read More Details

2 Chemistry MCQs

Permanent hardness of water can be removed by adding which substance?

  • Sodium carbonate (Na₂CO₃)
  • Alum (KAl(SO₄)₂·12H₂O)
  • Potassium permanganate (KMnO₄)
  • Lime (Ca(OH)₂)
0 Comments
Correct Answer: A. Sodium carbonate (Na₂CO₃)

Explanation:

Water hardness is a common issue that affects domestic and industrial water use. ... Read More Details

3 Biology Mcqs

The human eye has approximately how many megapixels of resolution?

  • 1080 MP
  • 720 MP
  • 576 MP
  • 570 MP
0 Comments
Correct Answer: C. 576 MP

Explanation:

The human eye is a highly specialized organ designed to detect light, color, ... Read More Details

4 Inorganic Chemistry MCQs

Which halogen reacts very slowly with hydrogen?

  • Fluorine (F₂)
  • Chlorine (Cl₂)
  • Bromine (Br₂)
  • Iodine (I₂)
0 Comments
Correct Answer: D. Iodine (I₂)

Explanation:

Halogens react with hydrogen to form hydrogen halides (HX). The reactivity of halogens ... Read More Details

5 Inorganic Chemistry MCQs

Which halogen has the highest electron affinity?

  • Fluorine
  • Chlorine
  • Bromine
  • Iodine
0 Comments
Correct Answer: B. Chlorine

Explanation:

Electron affinity is the energy change when an atom gains an electron. Among ... Read More Details

6 Inorganic Chemistry MCQs

Bromine can be released from a potassium bromide (KBr) solution by using which substance?

  • Iodine solution (I₂)
  • Chlorine (Cl₂)
  • Sodium chloride (NaCl)
  • Potassium iodide (KI)
0 Comments
Correct Answer: B. Chlorine (Cl₂)

Explanation:

Bromine can be displaced from a potassium bromide (KBr) solution by a more ... Read More Details

7 Inorganic Chemistry MCQs

Which halogen can displace all the other halogens from their compounds?

  • Fluorine (F₂)
  • Chlorine (Cl₂)
  • Iodine (I₂)
  • Bromine (Br₂)
0 Comments
Correct Answer: A. Fluorine (F₂)

Explanation:

Halogens are elements in Group 17 of the periodic table, including fluorine (F₂), ... Read More Details

8 Inorganic Chemistry MCQs

What is the chemical formula of sodium hypochlorite?

  • NaClO
  • NaClO₂
  • NaClO₃
  • NaClO₄
0 Comments
Correct Answer: A. NaClO

Explanation:

Sodium hypochlorite is an important inorganic compound with the chemical formula NaClO. It ... Read More Details

9 Inorganic Chemistry MCQs

Bleaching powder is not used for bleaching which of the following?

  • Cotton
  • Costly fabrics
  • Linen
  • Paper pulp
0 Comments
Correct Answer: B. Costly fabrics

Explanation:

Bleaching powder, chemically Ca(OCl)₂, is a widely used inorganic compound in the textile ... Read More Details

10 Inorganic Chemistry MCQs

Which of the following is not a use of fluorine compounds?

  • Antimony trifluoride (SbF₃) is used in the manufacture of pottery
  • Sodium fluoroacetate is used as a rat poison
  • Copper(II) fluoride (CuF₂) is used in the ceramic industry
  • None of the above
0 Comments
Correct Answer: D. None of the above

Explanation:

Fluorine forms a variety of inorganic compounds that have important industrial, chemical, and ... Read More Details

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