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Chapter: Chemistry
1.

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

A. Copper
B. Mercury
C. Lead
D. Aluminium
Answer» B. Mercury
discuss
2.

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

A. Chlorine
B. Nitrogen
C. Sulphur
D. Phosphorus
Answer» A. Chlorine
discuss
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
discuss
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
discuss
5.

Which among the following was first human-made plastic?

A. Bakelite
B. Polyethene
C. Celluloid
D. Nylon
Answer» C. Celluloid
discuss
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
discuss
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
discuss
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
discuss
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
discuss
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
discuss
11.

Polymetallic Modules (PMN) predominantly contain_____?

A. Calcium
B. Magnesium
C. Manganese
D. Copper
Answer» C. Manganese
discuss
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
discuss
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
discuss
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
discuss
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
discuss
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
discuss
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
discuss
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
discuss
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
discuss
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.
discuss
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
discuss
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
discuss
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
discuss
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
discuss
25.

The first metal to be used by man was:

A. Aluminum
B. copper
C. Iron
D. Silver
Answer» B. copper
discuss
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
discuss
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
discuss
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
discuss
29.

Haber Process is used to produce which among the following?

A. Potash
B. Ammonia
C. Urea
D. Nitrates
Answer» B. Ammonia
discuss
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
discuss
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
discuss
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
discuss
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
discuss
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
discuss
35.

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

A. Red
B. Blue
C. Yellow
D. Green
Answer» A. Red
discuss
36.

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

A. 1 & 2
B. 1 & 3
C. 2 & 3
D. 1, 2 & 3
Answer» D. 1, 2 & 3
discuss
37.

Which among the following makes Chile saltpetre different from saltpetre?

A. Nitrate
B. Sodium
C. Magnesium
D. Calcium
Answer» B. Sodium
discuss
38.

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

A. Copper Sulphate
B. Iron Sulfide
C. Brass
D. Silver Bromide
Answer» B. Iron Sulfide
discuss
39.

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

A. Oxygen
B. Carbon Dioxide
C. Water Vapour
D. Hydrogen
Answer» C. Water Vapour
discuss
40.

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

A. Sulphuric Acid
B. Nitric Acid
C. Hydrochloric Acid
D. Boric Acid
Answer» C. Hydrochloric Acid
discuss
41.

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

A. Rhodium
B. Sodium
C. Palladium
D. Osmium
Answer» C. Palladium
discuss
42.

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

A. Barium
B. Beryllium
C. Magnesium
D. Calcium
Answer» B. Beryllium
discuss
43.

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

A. metallic property
B. Chemical Reactiveness
C. Valency
D. Electron affinity
Answer» C. Valency
discuss
44.

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

A. Lathanides
B. Actinides
C. Noble Gases
D. Halogens
Answer» C. Noble Gases
discuss
45.

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

A. Gallium
B. Scandium
C. Technitium
D. Germanium
Answer» B. Scandium
discuss
46.

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

A. Ozone
B. Tetra oxygen
C. Octaoxygen
D. None of them
Answer» C. Octaoxygen
discuss
47.

Buckeyballs are basically the allotropes of _________?

A. Carbon
B. Sulfur
C. Phosphorus
D. Calcium
Answer» A. Carbon
discuss
48.

What is the number of synthetic elements in periodic Table?

A. 18
B. 22
C. 24
D. 26
Answer» C. 24
discuss
49.

Kimberley Process‖ is related to which among the following ?

A. Gold
B. Diamonds
C. Semi Precious Stones
D. Aluminium
Answer» B. Diamonds
discuss
50.

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

A. Beta macroglobulin
B. Gamma globulin
C. immunoglobulin
D. albumin
Answer» D. albumin
discuss
51.

Pearl is mainly made up of which among the following?

A. Protein
B. Calcium Carbonate
C. Silica
D. Sodium Carbonate
Answer» B. Calcium Carbonate
discuss
52.

As we all know that, Gunpowder is a mixture of sulfur, charcoal, and potassium nitrate. Which among these components adds in speeding up the burning of the Gun Powder?

A. Only Potassium Nitrate
B. Only Charcoal
C. Only Sulphur
D. Both Sulphur and Potassium Nitrate
Answer» C. Only Sulphur
discuss
53.

Normal‖ rainfall is slightly acidic (and a pH of 5.6 has been assigned which might be somewhere near 5 ) because of the presence of _______?

A. Nitric Oxide
B. Sulphuric Acid
C. Nitric Acid
D. Carbonic Acid
Answer» D. Carbonic Acid
discuss
54.

Which among the following is not correctly matched?

A. Brass: copper and zinc
B. Duralumin : Copper and aluminum
C. Constantan: Copper and Nickel
D. White Gold- Gold and Silver
Answer» D. White Gold- Gold and Silver
discuss
55.

Bring out the incorrect usage

A. Heavy water – Moderator
B. DDT – Insecticide
C. Methyl Alcohol – Beverage
D. Liquid Ammonia – Refrigerant
Answer» C. Methyl Alcohol – Beverage
discuss
56.

What is Carbamide?

A. A Pesticide
B. A Fertilizer
C. A Textile Dye
D. An Explosive
Answer» B. A Fertilizer
discuss
57.

Which among the following is the main constituent of vegetable oil and animal fats?

A. Glycogen
B. Triglyceride
C. Galactose
D. Diglyceride
Answer» B. Triglyceride
discuss
58.

Which among the following can be used as a preservative in Tomato Juice?

A. Sodium Chloride
B. Sodium carbonate
C. Sodium benzoate
D. Sodium Lauril Sulphate
Answer» C. Sodium benzoate
discuss
59.

Which among the following gas has lowest auto-ignition temperature?

A. Methane
B. Hydrogen
C. Ethylene
D. Carbon Di Sulphide
Answer» D. Carbon Di Sulphide
discuss
60.

Which among the following is the most stable form of carbon under standard conditions?

A. Charcoal
B. Graphite
C. Diamond
D. Amorphous carbon
Answer» B. Graphite
discuss
61.

Which among the following statement is correct?

A. Both Melting point & Boiling Point of Heavy water are higher than normal water
B. Both Melting point & Boiling Point of Heavy water are lower than normal water
C. Melting point is higher and Boiling Point is lower than normal water
D. Melting point is lower and Boiling Point is higher than normal water
Answer» A. Both Melting point & Boiling Point of Heavy water are higher than normal water
discuss
62.

Which among the following gives hissing sound when dissolved into H2O?

A. CaCO2
B. Ca(OH)2
C. CaO
D. CaCl2
Answer» C. CaO
discuss
63.

What is the number of naturally occurring Halogens in the periodic table?

A. 3
B. 4
C. 5
D. 6
Answer» C. 5
discuss
64.

Which among the following is the lowest atomic number element without any stable isotopes?

A. Technetium
B. Molybdenum
C. Ruthenium
D. Niobium
Answer» A. Technetium
discuss
65.

Which among the following is the main constituent of malleable metal alloy Pewter ?

A. Copper
B. Zinc
C. Tin
D. Bismuth
Answer» C. Tin
discuss
66.

How many parts are of other metals in a 17 carat Gold?

A. 3
B. 5
C. 7
D. 9
Answer» C. 7
discuss
67.

Which among the following does not come under carbon Group of Periodic Table?

A. silicon
B. germanium
C. tin
D. selenium
Answer» D. selenium
discuss
68.

Which among the following is not correctly matched?

A. Sodium: Natrium
B. Pottassium : Kalium
C. Mercury :Hydrargyrum
D. Arsenic : Stibium
Answer» D. Arsenic : Stibium
discuss
69.

The chemical oxygen demand COD test is commonly used to measure which of the following?

A. amount of organic compounds in water
B. amount of oxygen in water
C. amount of oxygen in a chemical
D. amount of oxygen used in a oxygenation process
Answer» A. amount of organic compounds in water
discuss
70.

Which among the following is an organic mineral?

A. Amber
B. Hornblende
C. Angite
D. Analcime
Answer» A. Amber
discuss
71.

Liming is the application of calcium and magnesium rich materials to soil in various forms, including marl, chalk, limestone, or hydrated lime. What is the purpose of liming?

A. Increase the Soil pH
B. Increase the bacteria activity
C. Both A & B
D. Decrease the bacterial activity
Answer» C. Both A & B
discuss
72.

Who among the following established that genetic code of all organisms is spelled out in three-letter words, each set of three nucleotides codes for a specific amino acid?

A. Hargobind Khorana
B. Barbara McClintock
C. Theodor O. Diener
D. Joseph L. Goldstein
Answer» A. Hargobind Khorana
discuss
73.

Which among the following is a main component of some alert tablets such as Alert, No Doz, Stay Awake & Vivarin?

A. Thein
B. Caffeine
C. Nicotine
D. catechins
Answer» B. Caffeine
discuss
74.

Which among the following compound of barium is used as radio contrast agent for X-ray imaging and other diagnostic procedures and also commonly called as Barium Food?

A. Barium Carbonate
B. Barium Sulphate
C. Barium Bromide
D. Barium hydroxide
Answer» B. Barium Sulphate
discuss
75.

Which among the following is used as an antidote?

A. Paracetamol
B. Nicotine
C. Thiamine
D. Activated Charcoal
Answer» D. Activated Charcoal
discuss
76.

Which among the following will undergo a chemical reaction depending on the pH of the solution?

A. Calcium Oxide
B. Zinc Oxide
C. Ferric Oxide
D. Ferrous Oxide
Answer» B. Zinc Oxide
discuss
77.

Bring out the statement which is wrong:

A. Acetone is used as a solvent
B. Adrenaline is used in the event of heart failure
C. graphite is an example of allotropy
D. All are correct
Answer» D. All are correct
discuss
78.

Which among the following basic atoms are must in an Alkaloid?

A. Sodium
B. Nitrogen
C. Magnesium
D. Potassium
Answer» B. Nitrogen
discuss
79.

F block elements in the periodic table which are commonly called Lanthanides have the following atomic numbers:

A. 57-70
B. 58-71
C. 59-72
D. 58-70
Answer» B. 58-71
discuss
80.

The volume of a gas at a given pressure and temperature is proportional to the number of atoms or molecules regardless of the nature of the gas. This concept is called as___?

A. Avogadro‘s law
B. Dalton‘s law
C. Henry‘s law
D. Ideal gas law
Answer» A. Avogadro‘s law
discuss
81.

Who among the following is known to manufacture first Cyclotron?

A. Ernest Lawrence
B. Niels Bohr
C. Rutherford
D. Max Born
Answer» A. Ernest Lawrence
discuss
82.

British Scientist JJ Thomson was awarded Nobel prize in Physics in 1906 for discovery of which of the following particle?

A. Electron
B. Proton
C. Neutron
D. Radio activity
Answer» A. Electron
discuss
83.

Charles Goodyear is known for which of the following?

A. Experiments on Rubber Plants
B. Vulcanization of Rubber
C. Invention of Radial Tyres
D. Invention of Artificial Rubber
Answer» B. Vulcanization of Rubber
discuss
84.

Which among the following gas is used in Balloons?

A. Hydrogen
B. Helium
C. Nitrogen
D. Oxygen
Answer» B. Helium
discuss
85.

Which among the following is the most important characteristic of Noble metals?

A. Luster
B. Non reactive nature
C. Preciousness
D. Rare availability
Answer» B. Non reactive nature
discuss
86.

What is the atomic number of Transuranic elements?

A. Greater than 90
B. Greater than 92
C. Greater than 91
D. Greater than 93
Answer» B. Greater than 92
discuss
87.

A Cyclotron is ___?

A. A charged particle
B. A particle Accelerator
C. A magnetic particle
D. A radioactive particle
Answer» B. A particle Accelerator
discuss
88.

Steel is an alloy consisting mostly of iron, with a carbon content between 0.2% and 2.1% by weight. An increasing amount of Iron will result in which of the following?

A. Increase Hardening
B. Decrease Hardening
C. Increase ductility
D. Increase melting Point
Answer» A. Increase Hardening
discuss
89.

Cassiterite is an ore of which of the following ?

A. Iron
B. Zinc
C. Copper
D. Tin
Answer» D. Tin
discuss
90.

Which of the following are found in nucleus of Deuterium

A. 1 proton & 1 neutron
B. 2 protons
C. 1 proton and 1 electron
D. 2 neutrons only
Answer» A. 1 proton & 1 neutron
discuss
91.

Which among the following provides the centripetal force to an electron circulating around the nucleus?

A. electrostatic forces of repulsion
B. electrostatic force of attraction
C. speed of the electron
D. nuclear charge
Answer» B. electrostatic force of attraction
discuss
92.

Which among the following of a catalyst does not change at the end of a reaction?

A. Quantity
B. Chemical Composition
C. Both Quantity and Chemical com position
D. None of the above
Answer» C. Both Quantity and Chemical com position
discuss
93.

The noble gases are a group of chemical elements with very similar properties: under standard conditions, they are all odorless, colorless, monatomic gases, with a very low chemical reactivity. How many Noble gases occur naturally?

A. 5
B. 6
C. 7
D. 8
Answer» B. 6
discuss (1)
94.

Hard Water contains which of the following?

A. Aluminum
B. Chlorine
C. Calcium
D. Zinc
Answer» C. Calcium
discuss
95.

Which among the following is an ionic solid?

A. Diamond
B. Dry ice
C. Table salt
D. All are ionic solids
Answer» C. Table salt
discuss
96.

Which among the following statements about Ozone is INCORRECT?

A. It is found in the upper atmosphere filters potentially damaging ultraviolet light from reaching the Earth‘s surface
B. It is lighter than oxygen that is why it is found in the upper atmosphere
C. It is an allotrope of oxygen
D. All are correct
Answer» B. It is lighter than oxygen that is why it is found in the upper atmosphere
discuss
97.

Which among the following is correct ?

A. Oxidation takes place at Cathode and Reduction Takes Place at Anode
B. Oxidation takes place at Anode and Reduction Takes place at Cathode
C. Both Oxidation and Reduction takes place at cathode
D. Both Oxidation and Reduction takes place at Anode
Answer» B. Oxidation takes place at Anode and Reduction Takes place at Cathode
discuss
98.

The atomic weight of Chlorine is 35. It consists of _______?

A. 17 Protons + 18 Neutrons
B. 17 Neutrons + 18 protons
C. 17 Neutrons + 17 Protons + 1 electron
D. None of the above
Answer» A. 17 Protons + 18 Neutrons
discuss
99.

When we buy a Jewellery of 22 carat Gold , this means that we are getting a purity of gold with ______?

A. 90%
B. 91.67%
C. 95.5%
D. 98%
Answer» B. 91.67%
discuss
100.

An Jewellery was left exposed to the atmosphere for some time and it becomes coated with green carbonate. The Jewellery is made up of which of the following?

A. Copper
B. Silver
C. Zinc
D. Gold
Answer» A. Copper
discuss

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