General Science MCQs and Notes

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📊 General Science
Q. Pyrolusite, Braunite, Psilomelane and Rhodochrosite are the ores of which among the following:
1. Manganese
2. Aluminium
3. Copper
Choose the correct option:
  • (A) Only 1
  • (B) Only 1 & 2
  • (C) Only 3
  • (D) Only 1 & 3
💬 Discuss
✅ Correct Answer: (A) Only 1
📊 General Science
Q. 054615 gigajoule]
24. Consider the following statements:
1. The space between the valence and conduction bands is zero in Graphene
2. This property of Graphene makes it an excellent transistor of commercial viability
Which among the above statements is/ are correct?
  • (A) Only 1
  • (B) Only 2
  • (C) Both 1 & 2
  • (D) Neither 1 nor 2
💬 Discuss
✅ Correct Answer: (A) Only 1
📊 General Science
Q. Which among the following is the correct almost equivalent to 1 MMBTU Natural Gas ?
  • (A) 1.054615 gigajoule
  • (B) 0.1054615 gigajoul
  • (C) 10.54615 gigajoule
  • (D) 105.4615 gigajoule
💬 Discuss
✅ Correct Answer: (A) 1.054615 gigajoule
📊 General Science
Q. Now a days, a little pack of Silica Gel (granular beads of Silica made from Sodium Silicate) comes with many products to control humidity and avoid spoilage or degradation of some goods. Which among the following property of Silica gel makes it useful for that purpose?
  • (A) Silica gel molecules are hydrophilic with large surface area and so its molecules trap the moisture
  • (B) Silica gel is a Hygroscopic substance with large surface area so its molecules absorb the moisture.
  • (C) Silica gel molecules are with a portion that is charge-polarized and capable of hydrogen bonding, thus bonds with the water molecules
  • (D) The semi permeable pouch in which silica gel is placed absorbs the moisture which later reacts with water.
💬 Discuss
✅ Correct Answer: (B) Silica gel is a Hygroscopic substance with large surface area so its molecules absorb the moisture.
📊 General Science
Q. A baby diaper, if tested with various solutions, will absorb maximum amount of which among the following:
  • (A) Distill Water
  • (B) Drinking water
  • (C) Hard water
  • (D) Urine
💬 Discuss
✅ Correct Answer: (A) Distill Water
📊 General Science
Q. Which among the following substances is being used most commonly for producing synthetic jet Fuel?
  • (A) Coal
  • (B) Natural Gas
  • (C) Plastic Waste
  • (D) Biomass
💬 Discuss
✅ Correct Answer: (A) Coal
📊 General Science
Q. Above 70 °C, sodium bicarbonate has a property of gradually decomposing, which makes it usable in Bakery products. Which among the following end product of this Thermal decomposition of Sodium bicarbonate makes it usable for the above purpose?
  • (A) Hydrogen
  • (B) Carbon Dioxide
  • (C) Water Vapor
  • (D) Sodium Carbonate
💬 Discuss
✅ Correct Answer: (B) Carbon Dioxide
📊 General Science
Q. Acetylene cannot be safely pressurized as a pure compound. Which among the following is used for safe storage and transportation of Acetylene?
  • (A) Kerosene
  • (B) Acetone
  • (C) Vinegar (Acetic Acid)
  • (D) Propylene glycol
💬 Discuss
✅ Correct Answer: (B) Acetone
📊 General Science
Q. Aluminum is getting popular worldwide today as a ―Green Metal‖. Which among the following properties of Aluminum makes it a Green Metal?
  • (A) Aluminum has been providing a replacement of wood for saving forests and contributes in environment protection
  • (B) Aluminum is a light metal and it is resistant to corrosion
  • (C) Aluminum has fairly high rate of recycling and it can be re-used repeatedly without its quality deteriorating
  • (D) The lands after the Bauxite mining can be restored very quickly and easily
💬 Discuss
✅ Correct Answer: (C) Aluminum has fairly high rate of recycling and it can be re-used repeatedly without its quality deteriorating
📊 General Science
Q. An aqueous solution of Sodium Acetate will be of which among the following nature?
  • (A) Acidic
  • (B) Basic
  • (C) Neutral
  • (D) Either acidic or basic depending upon temperature of solution
💬 Discuss
✅ Correct Answer: (B) Basic

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