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190+ Chemistry Solved MCQs

in General Science

These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: General Knowledge (GK) , Union Public Service Commission (UPSC) , Indian Administrative Service (IAS) , Staff Selection Commission (SSC) .

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1.	Amalgam‘ is a term used for an alloy of a metal with:
A.	Copper
B.	Mercury
C.	Lead
D.	Aluminium
Answer» B. Mercury

2.	Gammaxene, D.D.T. and Bleaching powder are important compounds of :
A.	Chlorine
B.	Nitrogen
C.	Sulphur
D.	Phosphorus
Answer» A. Chlorine

3.	L.P.G. is a hydrocarbon consisting of a mixture of:
A.	Methane and Butane
B.	Propane and Butane
C.	Ethane and Propane
D.	Ethane and Butane
Answer» B. Propane and Butane

4.	What is Kerogen oil?
A.	Its an unconventional oil produced from the pyrolysis, hydrogenation, or thermal dissolution of Oil Shales
B.	Its a light crude oil contained in petroleum-bearing formations of shales
C.	Its an unconventional oil produced from the pyrolysis, hydrogenation, or thermal dissolution of environmental wastes
D.	It‘s a new form of vegetable oil prepared artificially in laboratory
Answer» A. Its an unconventional oil produced from the pyrolysis, hydrogenation, or thermal dissolution of Oil Shales

5.	Which among the following was first human-made plastic?
A.	Bakelite
B.	Polyethene
C.	Celluloid
D.	Nylon
Answer» C. Celluloid

6.	Which among the following is the correct impact of the London Forces in the Cycloalkanes?
A.	The melting and boiling points get increased
B.	The Melting and boiling points get decreased
C.	There is not impact on the melting and boiling points
D.	The melting point increases but boiling point decreases
Answer» A. The melting and boiling points get increased

7.	Gargling with a solution of table salt is known to provide relief for a sore throat because ___ ?
A.	It kills bacteria
B.	It works as analgesic
C.	It dehydrates water from inflammatory tissues by Osmosis
D.	Placebo effect
Answer» C. It dehydrates water from inflammatory tissues by Osmosis

8.	The Potassium graphite and Calcium Graphite can be mostly used as which among the following?
A.	Moderators
B.	Semiconductors
C.	Superconductors
D.	Lubricants
Answer» C. Superconductors

9.	Which among the following minerals is also known as Horn Silver?
A.	Silver Iodide
B.	Silver Chroride
C.	Zinc Phosphate
D.	Silver Sulphide
Answer» B. Silver Chroride

10.	Consider the following particles in relation to the matter: π-Meson (Pi-meson) Photon Which among the above are considered to be mass less and charge less?
A.	Only 1
B.	Only 2
C.	Both 1 & 2
D.	Neither 1 nor 2
Answer» B. Only 2

11.	Polymetallic Modules (PMN) predominantly contain_____?
A.	Calcium
B.	Magnesium
C.	Manganese
D.	Copper
Answer» C. Manganese

12.	The colors in the fine cut diamond are because of which among the following?
A.	Variance in transparency of diamond
B.	Variance in index of refraction
C.	Presence of Impurities
D.	Existence of definite planer layers
Answer» C. Presence of Impurities

13.	Benzoepin, Parrysulfan, Phaser, Thiodan, Thionex etc. are the names of which among the following pesticides?
A.	Kepone
B.	Paraquat
C.	Endosulfan
D.	Toxaphene
Answer» C. Endosulfan

14.	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
Answer» B. Basic

15.	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
Answer» C. Aluminum has fairly high rate of recycling and it can be re-used repeatedly without its quality deteriorating

16.	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
Answer» B. Acetone

17.	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
Answer» B. Carbon Dioxide

18.	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
Answer» A. Coal

19.	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
Answer» A. Distill Water

20.	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.
Answer» B. Silica gel is a Hygroscopic substance with large surface area so its molecules absorb the moisture.

21.	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
Answer» A. 1.054615 gigajoule

22.	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
Answer» A. Only 1

23.	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
Answer» A. Only 1

24.	Consider the following statements: 1. Copernicium is at present highest-numbered element recognized by IUPAC 2. Copernicum has been synthesized in the lab by a nuclear reaction of Zinc and Lead Isotopes Which among the above statements is / are correct?
A.	Only 1 is correct
B.	Only 2 is correct
C.	Both 1 & 2 are correct
D.	Neither 1 nor 2 are correct
Answer» C. Both 1 & 2 are correct

25.	The first metal to be used by man was:
A.	Aluminum
B.	copper
C.	Iron
D.	Silver
Answer» B. copper

190+ Chemistry Solved MCQs

Amalgam‘ is a term used for an alloy of a metal with:

Gammaxene, D.D.T. and Bleaching powder are important compounds of :

L.P.G. is a hydrocarbon consisting of a mixture of:

What is Kerogen oil?

Which among the following was first human-made plastic?

Which among the following is the correct impact of the London Forces in the Cycloalkanes?

Gargling with a solution of table salt is known to provide relief for a sore throat because ___ ?

The Potassium graphite and Calcium Graphite can be mostly used as which among the following?

Which among the following minerals is also known as Horn Silver?

Consider the following particles in relation to the matter: π-Meson (Pi-meson) Photon Which among the above are considered to be mass less and charge less?

Polymetallic Modules (PMN) predominantly contain_____?

The colors in the fine cut diamond are because of which among the following?

Benzoepin, Parrysulfan, Phaser, Thiodan, Thionex etc. are the names of which among the following pesticides?

An aqueous solution of Sodium Acetate will be of which among the following nature?

Aluminum is getting popular worldwide today as a ―Green Metal‖. Which among the following properties of Aluminum makes it a Green Metal?

Acetylene cannot be safely pressurized as a pure compound. Which among the following is used for safe storage and transportation of Acetylene?

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?

Which among the following substances is being used most commonly for producing synthetic jet Fuel?

A baby diaper, if tested with various solutions, will absorb maximum amount of which among the following:

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?

Which among the following is the correct almost equivalent to 1 MMBTU Natural Gas ?

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?

Pyrolusite, Braunite, Psilomelane and Rhodochrosite are the ores of which among the following: 1. Manganese 2. Aluminium 3. Copper Choose the correct option:

Consider the following statements: 1. Copernicium is at present highest-numbered element recognized by IUPAC 2. Copernicum has been synthesized in the lab by a nuclear reaction of Zinc and Lead Isotopes Which among the above statements is / are correct?

The first metal to be used by man was:

For respiration in deep sea, divers use mixture of:

The minimum temperature at which a combustible substance catches fire is called:

Haber Process is used to produce which among the following?

If a Hydrogen atom is removed from a hydrocarbon of Benzene group, the remaining residue is called _________?

Which among the following kinds of Chemical reactions cause the rocks turn red or yellowish?

Which among the following is the unit of the scale used for measurement of the spicy heat of a chili pepper?

Every kilogram of seawater has approximately how much dissolved salts?

Gypsum is added to Cement so that, _________?

The color ―Carmine‖ is a shade of which among the following colors?

Consider the following: Copper Zinc Tin Gun Metal is the alloy of which among the above?

Which among the following makes Chile saltpetre different from saltpetre?

Which among the following is ―Fool‘s Gold‖ ?

When a piece of quicklime is dipped in water, it gives bubbles. This bubbling is due to which of the following?

Which among the following acid is used to ascertain, whether pure Ghee has been adulterated with Vanaspati or Margarine?

Mizoroki-Heck reaction is catalyzed by which of the following metals?

Which among the following is used in preparing windows for X-Ray Tubes ?

Which among the following first increases than decreases in a Period of a periodic table?

Which among the following were not discovered by the time , Mendeleev published his periodic table?

Ekaboron was an element predicted by Mendeleev and he leaved a space for it in his Periodic Table. Later Ekaboron was identified with _____?

Which among the following allotropes of Oxygen is found in 6 phases under various pressures and temperatures?

Buckeyballs are basically the allotropes of _________?

What is the number of synthetic elements in periodic Table?

Kimberley Process‖ is related to which among the following ?

Which among the following protein is responsible for maintenance of osmotic pressure?

Consider the following particles in relation to the matter:
π-Meson (Pi-meson)
Photon
Which among the above are considered to be mass less and charge less?

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?

Pyrolusite, Braunite, Psilomelane and Rhodochrosite are the ores of which among the following:
1. Manganese
2. Aluminium
3. Copper
Choose the correct option:

Consider the following statements:
1. Copernicium is at present highest-numbered element recognized by IUPAC
2. Copernicum has been synthesized in the lab by a nuclear reaction of Zinc and Lead Isotopes
Which among the above statements is / are correct?

Consider the following:
Copper
Zinc
Tin
Gun Metal is the alloy of which among the above?

26.	For respiration in deep sea, divers use mixture of:
A.	Oxygen and helium
B.	Oxygen and hydrogen
C.	Oxygen and carbon dioxide
D.	Oxygen, Helium & nitrogen
Answer» D. Oxygen, Helium & nitrogen

27.	The minimum temperature at which a combustible substance catches fire is called:
A.	fireless temperature
B.	ignition temperature
C.	static temperature
D.	optimum temperature
Answer» B. ignition temperature

28.	Consider the following statements regarding Graphene and Fullerene: 1. Graphene is 2 dimensional , Fullerene is generally 3 dimensional 2. Graphene is SP2 allotrope of Carbon, while Fullerene is SP3 allotrope of Carbon 3. Graphene does not dissolve in petrol but fullerenes dissolve Which among the above statements is / are correct?
A.	Only 1 is correct
B.	Only 2 is correct
C.	Only 3 is correct
D.	1 & 3 are correct
Answer» D. 1 & 3 are correct

29.	Haber Process is used to produce which among the following?
A.	Potash
B.	Ammonia
C.	Urea
D.	Nitrates
Answer» B. Ammonia

30.	If a Hydrogen atom is removed from a hydrocarbon of Benzene group, the remaining residue is called _________?
A.	Alkyl
B.	Aryl
C.	Arene
D.	Azene
Answer» B. Aryl

31.	Which among the following kinds of Chemical reactions cause the rocks turn red or yellowish?
A.	Hydration
B.	Oxidation
C.	Carbonation
D.	Exfoliation
Answer» B. Oxidation

32.	Which among the following is the unit of the scale used for measurement of the spicy heat of a chili pepper?
A.	Smith
B.	Wright
C.	Orville
D.	Scoville
Answer» D. Scoville

33.	Every kilogram of seawater has approximately how much dissolved salts?
A.	1 gm
B.	0.35 gms
C.	3.5 gms
D.	35 gms
Answer» D. 35 gms

34.	Gypsum is added to Cement so that, _________?
A.	setting of cement can be fastened
B.	setting of cement can be slowed
C.	Cement strength can be improved
D.	Cement strength can be controlled
Answer» B. setting of cement can be slowed

35.	The color ―Carmine‖ is a shade of which among the following colors?
A.	Red
B.	Blue
C.	Yellow
D.	Green
Answer» A. Red