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This set of General Science Multiple Choice Questions & Answers (MCQs) focuses on Chemistry Set 8

Q1 | An aqueous solution of Sodium Acetate will be of which among the following nature?
  • Acidic
  • Basic
  • Neutral
  • Either acidic or basic depending upon temperature of solution
Q2 | Aluminum is getting popular worldwide today as a ?Green Metal?. Which among the following properties of Aluminum makes it a Green Metal?
  • Aluminum has been providing a replacement of wood for saving forests and contributes in environment protection
  • Aluminum is a light metal and it is resistant to corrosion
  • Aluminum has fairly high rate of recycling and it can be re-used repeatedly without its quality deteriorating
  • The lands after the Bauxite mining can be restored very quickly and easily
Q3 | Acetylene cannot be safely pressurized as a pure compound. Which among the following is used for safe storage and transportation of Acetylene?
  • Kerosene
  • Acetone
  • Vinegar (Acetic Acid)
  • Propylene glycol
Q4 | 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?
  • Hydrogen
  • Carbon Dioxide
  • Water Vapor
  • Sodium Carbonate
Q5 | Which among the following substances is being used most commonly for producing synthetic jet Fuel?
  • Coal
  • Natural Gas
  • Plastic Waste
  • Biomass
Q6 | A baby diaper, if tested with various solutions, will absorb maximum amount of which among the following:
  • Distill Water
  • Drinking water
  • Hard water
  • Urine
Q7 | 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?
  • Silica gel molecules are hydrophilic with large surface area and so its molecules trap the moisture
  • Silica gel is a Hygroscopic substance with large surface area so its molecules absorb the moisture.
  • Silica gel molecules are with a portion that is charge-polarized and capable of hydrogen bonding, thus bonds with the water molecules
  • The semi permeable pouch in which silica gel is placed absorbs the moisture which later reacts with water.
Q8 | Which among the following is the correct almost equivalent to 1 MMBTU Natural Gas ?
  • 1.054615 gigajoule
  • 0.1054615 gigajoul
  • 10.54615 gigajoule
  • 105.4615 gigajoule
Q9 | 054615 gigajoule]24. Consider the following statements:1. The space between the valence and conduction bands is zero in Graphene2. This property of Graphene makes it an excellent transistor of commercial viabilityWhich among the above statements is/ are correct?
  • Only 1
  • Only 2
  • Both 1 & 2
  • Neither 1 nor 2
Q10 | Pyrolusite, Braunite, Psilomelane and Rhodochrosite are the ores of which among the following:1. Manganese2. Aluminium3. CopperChoose the correct option:
  • Only 1
  • Only 1 & 2
  • Only 3
  • Only 1 & 3
Q11 | Consider the following statements:1. Copernicium is at present highest-numbered element recognized by IUPAC2. Copernicum has been synthesized in the lab by a nuclear reaction of Zinc and Lead IsotopesWhich among the above statements is / are correct?
  • Only 1 is correct
  • Only 2 is correct
  • Both 1 & 2 are correct
  • Neither 1 nor 2 are correct
Q12 | The first metal to be used by man was:
  • Aluminum
  • copper
  • Iron
  • Silver
Q13 | For respiration in deep sea, divers use mixture of:
  • Oxygen and helium
  • Oxygen and hydrogen
  • Oxygen and carbon dioxide
  • Oxygen, Helium & nitrogen
Q14 | The minimum temperature at which a combustible substance catches fire is called:
  • fireless temperature
  • ignition temperature
  • static temperature
  • optimum temperature
Q15 | Consider the following statements regarding Graphene and Fullerene:1. Graphene is 2 dimensional , Fullerene is generally 3 dimensional2. Graphene is SP2 allotrope of Carbon, while Fullerene is SP3 allotrope of Carbon3. Graphene does not dissolve in petrol but fullerenes dissolveWhich among the above statements is / are correct?
  • Only 1 is correct
  • Only 2 is correct
  • Only 3 is correct
  • 1 & 3 are correct
Q16 | Haber Process is used to produce which among the following?
  • Potash
  • Ammonia
  • Urea
  • Nitrates
Q17 | If a Hydrogen atom is removed from a hydrocarbon of Benzene group, the remaining residue is called _________?
  • Alkyl
  • Aryl
  • Arene
  • Azene
Q18 | Which among the following kinds of Chemical reactions cause the rocks turn red oryellowish?
  • Hydration
  • Oxidation
  • Carbonation
  • Exfoliation
Q19 | Which among the following is the unit of the scale used for measurement of the spicy heat of a chili pepper?
  • Smith
  • Wright
  • Orville
  • Scoville
Q20 | Every kilogram of seawater has approximately how much dissolved salts?
  • 1 gm
  • 0.35 gms
  • 3.5 gms
  • 35 gms
Q21 | Gypsum is added to Cement so that, _________?
  • setting of cement can be fastened
  • setting of cement can be slowed
  • Cement strength can be improved
  • Cement strength can be controlled
Q22 | The color ?Carmine? is a shade of which among the following colors?
  • Red
  • Blue
  • Yellow
  • Green
Q23 | Consider the following:CopperZincTinGun Metal is the alloy of which among the above?
  • 1 & 2
  • 1 & 3
  • 2 & 3
  • 1, 2 & 3
Q24 | Which among the following makes Chile saltpetre different from saltpetre?
  • Nitrate
  • Sodium
  • Magnesium
  • Calcium
Q25 | Which among the following is ?Fool‘s Gold? ?
  • Copper Sulphate
  • Iron Sulfide
  • Brass
  • Silver Bromide