R4RIN – MCQs, Mock Tests | Chemistry Chemistry MCQ Questions Set-13

Pernicious anaemia is caused by the deficiency of vitamin .......

1. B2
2. B6
3. B3
4. B1

✅ Correct Answer: 4

Which of the following is not an example of a biomass energy source?

1. Wood
2. Ethanol
3. Cow dung
4. Atomic energy

✅ Correct Answer: 4

All the member of homologous series can be represented by the same general formula. Choose the INCORRECT formula from among the following. Alkane - Cn H2n+2 Alkene - Cn H2n+1 Alkyne - Cn H2n-2

1. Alkane - Cn H2n+2 and Alkyne - Cn H2n-2
2. Alkane - Cn H2n+2
3. Alkene - Cn H2n+1
4. Alkyne - Cn H2n-2

✅ Correct Answer: 3

Which gas is released when bleaching powder is added to water?

1. Carbon Dioxide
2. Hydrogen
3. Chlorine
4. Carbon Monoxide

✅ Correct Answer: 3

In Newlands table the elements ___ were placed with the halogens.

1. Ce and La
2. Fe and Se
3. Mn and As
4. Co and Ni

✅ Correct Answer: 4

During combustion of unsaturated compounds a ___ is seen.

1. clean flame
2. blue flame
3. red flame
4. yellow flame

✅ Correct Answer: 4

Name the only metal that is antibacterial.

1. Iron
2. Sodium
3. Aluminium
4. Copper

✅ Correct Answer: 4

Which of the following is used to remove the green colour from glass?

1. Manganese dioxide
2. Sulphur dioxide
3. Titanium dioxide
4. Silicon dioxide

✅ Correct Answer: 1

What is the molecular formula of Calcium Phosphate?

1. Ca3(PO4)2
2. Ca(PO4)2
3. CaPO4
4. Ca3(PO4)3

✅ Correct Answer: 1

The 4th and 5th periods contain:

1. 8 elements
2. 18 elements
3. 11 elements
4. 9 elements

✅ Correct Answer: 2

An element having atomic number 17 will resemble which of the following elements having Atomic number as given below?

1. 33
2. 34
3. 18
4. 34

✅ Correct Answer: 4

In which of the following groups of the modern periodic table are the noble gases placed?

1. 16
2. 18
3. 17
4. 15

✅ Correct Answer: 2

The most active ingredient in bleaching powder is

1. Iodine
2. Calcium hypochlorite
3. Nitric acid
4. Ammonium sulphate

✅ Correct Answer: 2

What is the maximum number of electrons that the outermost shell can have?

1. 2
2. 6
3. 8
4. none

✅ Correct Answer: 3

Brass is an alloy made of

1. Copper and Tin
2. Copper and Zinc
3. Copper and Aluminium
4. Copper and Iron

✅ Correct Answer: 2

Which of the following is an example of a metal that needs to be stored under oil?

1. Potassium
2. Gold
3. Iron
4. Silver

✅ Correct Answer: 1

The mass number of an isotope of an element is 298. If its nucleus has 196 neutrons what is its atomic number?

1. 196
2. 102
3. 494
4. 298

✅ Correct Answer: 2

What is mixing an acid with water that results in a decrease in the concentration of ions per unit volume called?

1. Dilution
2. Neutralisation
3. Acidification
4. Concentration

✅ Correct Answer: 1

When copper oxide is heated with hydrogen. copper metal and water are formed. What happens to the hydrogen in this reaction?

1. both oxidation and reduction
2. Reduction
3. Oxidation
4. Decomposition

✅ Correct Answer: 3

Which of the following gases is consistently seen to be most abundant in a volcanic eruption?

1. Sulphur Dioxide
2. Carbon Dioxide
3. Water vapour
4. Hydrogen Sulphide

✅ Correct Answer: 3

Who predicted the existence of some yet to be discovered elements on the basis of gaps in his periodic table?

1. Mendeleev
2. Dobereiner
3. Newlands
4. Darwiin

✅ Correct Answer: 1

Which of the following statement(s) is/are CORRECT? I. Carbon compounds linked by only single bond are called saturated compounds. II. Carbon compounds having double or triple bonds are called unsaturated compounds. III. Saturated carbon compounds are more reactive than unsaturated carbon compounds.

1. Only I and II
2. Only I and III
3. Only II and III
4. All I II and III

✅ Correct Answer: 1

Which of the following is used for removing permanent hardness of water?

1. Lime
2. Washing soda
3. Bleaching powder
4. Baking soda

✅ Correct Answer: 2

Which of the following is used as a substitute of mercury in thermometers?

1. Selenium
2. Arsenic
3. Galinstan
4. Bromine

✅ Correct Answer: 3

Which of the following is NOT an ore of iron?

1. Cuprite
2. Haematite
3. Magnetite
4. Siderite

✅ Correct Answer: 1

Which of the following can undergo sublimation?

1. Ammonium chloride
2. Ammonium chlorate
3. Ammonium sulphate
4. Ammonium phosphate

✅ Correct Answer: 1

What happens when dilute hydrochloric acid is added to iron filings?

1. Only chloride are produced
2. Hydrogen gas and iron chloride are produced
3. No reaction take place
4. Only hydrogen gas is produced

✅ Correct Answer: 2

Which of the following acids is NOT present in grapes?

1. Acetic acid
2. Malic acid
3. Tartaric acid
4. Citric acid

✅ Correct Answer: 1

Which of the following is also known as Epsom salt?

1. Calcium Sulphate
2. Magnesium Sulphate
3. Sodium Sulphate
4. Ferrous Sulphate

✅ Correct Answer: 2

Which of the following can be used as a catalyst in Hydrogenation reaction?

1. Barium
2. Iron
3. Tungsten
4. Palladium

✅ Correct Answer: 4

__ are homogeneous mixtures of two or more components.

1. Amalgams
2. Solutions
3. Enzymes
4. Emulsions

✅ Correct Answer: 2

Which among the following is a cation?

1. Ammonium
2. Iodide
3. Chloride
4. Calcium

✅ Correct Answer: 1

Which among the following has its refractive index closest to that of crown glass?

1. Diamond
2. Ruby
3. Sapphire
4. Canada balsam

✅ Correct Answer: 4

One should use porcelain and not metal containers in a microwave oven because..

1. Charge may accumulate on the metal surface and there is danger of getting a shock
2. Porcelain vessels are better conductors of heat and thus food gets cooked quickly
3. Metal containers might undergo chemical reaction leading to spoilage of food
4. Porcelain vessels are cheaper than the metal containers

✅ Correct Answer: 1

Which of the following is a chemical change?

1. Butter turning rancid
2. Making dry ice from CO2
3. Heating a platinum wire
4. Magnetisation of iron

✅ Correct Answer: 1

Identify a use of the isotope of uranium.

1. Fuel in nuclear reactors
2. Treatment of goitre
3. Treatment of cancer
4. Fuel in aeroplanes

✅ Correct Answer: 1

Which of the following metals reacts vigorously with cold water?

1. Potassium
2. Aluminium
3. Zinc
4. Iron

✅ Correct Answer: 1

Least distance of distinct vision for normal eye is

1. 15cm
2. 20cm
3. 25 cm
4. 30cm

✅ Correct Answer: 3

What is the number of atoms constituting a molecule known as?

1. Atomicity
2. Atomic mass
3. Atomic number
4. Isotopes

✅ Correct Answer: 1

Rupee 5 and 10 coins are now made of

1. Ferritic stainless steel
2. Silver and steel
3. Cupro nickel alloy
4. Copper and brass

✅ Correct Answer: 3

Which among the following happens in an oxidation reaction?

1. Electrons are gained
2. Electrons are lost
3. Protons are gained
4. Protons are lost

✅ Correct Answer: 2

Safety matches contain

1. Sulphur
2. Phosphorus
3. Magnesium
4. Potassium

✅ Correct Answer: 2

The smell that we get when LPG cylinder leaks is due to the presence of

1. Nitrogen peroxide
2. Carbon monoxide
3. Sulphur compound
4. Carbon dioxide

✅ Correct Answer: 3

___ is one of the states of matter obtained by cooling a gas of very low density to extremely low temperatures.

1. Gas
2. Plasma
3. Bose-Einstein Condensate (BEC)
4. Plasma Condensate

✅ Correct Answer: 3

Which of the following is used in the preparation of vinegar?

1. Methanol
2. Acetic acid
3. Ethanol
4. Ethanoic acid

✅ Correct Answer: 2

Galvanization a process to prevent rusting involves use of ___ coating to steel or iron.

1. Nickel
2. Magnesium
3. Copper
4. Zinc

✅ Correct Answer: 4

Which among the following is popularly called Laughing gas?

1. Nitric oxide
2. Nitrogen dioxide
3. Nitrous oxide
4. Nitrogen peroxide

✅ Correct Answer: 3

When milk becomes sour ___ is produced.

1. Lactose
2. Lactic acid
3. Salicylic acid
4. Linoleic acid

✅ Correct Answer: 2