Chemistry in Everyday Life Class 12 Questions and Answers. We covered all the Chemistry in Everyday Life Class 12 Questions and Answers in this post for free so that you can practice well for the exam.
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Mock Test on Chemistry in Everyday Life for Class 12 Students
Consider the following statements. I. Glass wool has a tensile strength greater than steel. II. Glass wool is fireproof. III. Glass wool has high electrical conductivity and absorbs moisture. IV. Glass wool is used to prepare libre glass. Which of the statements given above is correct?
(a) I, II, III and IV
(b) I, II and III
(c) I, II and IV
(d) III and IV
Option c – I, II and IV
Consider the following statements. I. Pyrex glasses have boron oxide as the main constituent besides silica. II. Pyrex glasses have the high thermal expansion, thus less vulnerability to cracking from thermal shock. III. They are commonly used for reagent bottles, optical components and household cookware. Which of the statement(s) given above is/are correct?
(a) I, II and III
(b) I and III
(c) II and III
(d) Only II
Option b – I and III
The hair dye available in the market contains two bottles, one containing dye and the other containing hydrogen peroxide. The bottles are mixed before applying the dye. The function of hydrogen peroxide is
(a) to dilute the dye.
(b) to oxidise the dye to give the desired colour.
(c) to reduce the dye to give the desired colour.
(d) to acidify the dye solution.
Option b – to oxidise the dye to give the desired colour
Glass is soluble in
(a) H₂SO4
(b) HCIO4
(c) HNO3
(d) HF
Option d – HF
Glass is a
(a) superheated solid
(b) supercooled liquid
(c) supercooled gas
(d) superheated liquid
Option b – supercooled liquid
Which one of the following types of glasses are used for making optical instruments?
(a) Pyrex glass
(b) Soft glass
(c) Hard glass
(d) Flint glass
Option c – Hard glass
Which one of the following types of glass can cut off ultraviolet rays?
(a) Soda glass
(b) Pyrex glass
(c) Jena glass
(d) Crooked glass
Option d – Crooked glass
One of the occupational health hazards commonly faced by the workers of the ceramic, pottery of glass industries is
(a) stone formation in the gallbladder
(b) melanoma
(c) stone formation in the kidney
(d) silicosis
Option c – stone formation in the kidney
Which one of the following statements about glass is not correct?
(a) Glass is often said to be a supercooled liquid.
(b) Glass has no definite melting point.
(c) Soda glass is harder than pyrex glass.
(d) Boron is present in pyrex glass.
Option c – Soda glass is harder than pyrex glass
Which one of the following is the reason for keeping the chloroform in brown-tinted glass containers?
(a) Its brilliance in colour hurts the eyes.
(b) Its deep red colour is piercing.
(c) With UV-rays and O₂, it forms poisonous gas phosgene.
(d) With IR rays, it forms a poisonous cyanide.
Option c – With UV-rays and O₂, it forms poisonous gas phosgene
Select the correct statement from the codes given below. I. Cut glasses are lead glasses. II. The main raw material for the preparation of soda glass is Na₂CO3. III. Quicklime is CaO. Codes
(a) I and II
(b) II and III
(c) I and III
(d) Only II
Option c – I and III
Consider the following statements. I. Photochromic lenses are lenses that darken on exposure to ultraviolet light. II. Photochromic properties are due to the embedded microcrystalline of silver chloride in the glass. Which of the statement(s) given above is/are correct?
(a) Only I
(b) Only II
(c) Both I and II
(d) Neither I nor II
Option c – Both I and II
Consider the following statements. I. A chalcogenide glass is a glass containing sulphur, selenium or tellurium. II. Chalcogenide glass forms the basis of re-writable CD and DVD solid-state memory technology. Which of the statement(s) given above is/are correct?
(a) Only I
(b) Only II
(c) Both I and II
(d) Neither I nor II
Option c – Both I and II
An ideal fuel should have
(a) a high calorific value
(b) a low ignition value
(c) regulated and controlled
(d) All of the above
Option d – All of the above
Which one of the following gases, released from a biogas plant is used as a fuel gas?
(a) Butane
(b) Propane
(c) Methane
(d) Ethane
Option c – Methane
Which of the following is an example of fossil fuel?
(a) Wood
(b) Coke
(c) Natural gas
(d) Producer gas
Option c – Natural gas
A thick paste of cement, sand and water is called
(a) Concrete
(b) RCC
(c) Mortar
(d) Kiln
Option c – Mortar
Which one among the following is the chemical formula of gypsum, which is an ingredient of cement?
(a) Ca₂SiO4
(b) CaSO4 2H₂O
(c) CaO
(d) CaSO4 3H₂O
Option b – CaSO4 2H₂O
Which one among the following is not an example of ceramics?
(a) Beryllia
(b) Zirconia
(c) Alumina
(d) Geraniol
Option d – Geraniol
Ceramic balls can be used to
(a) replace steel in ball bearings
(b) rifle fire
(c) on a hard surface
(d) None of the above
Option a – replace steel in ball bearings
Which one of the following has the highest fuel value?
(a) Hydrogen
(b) Charcoal
(c) Natural gas
(d) Gasoline
Option a – Hydrogen
Which of the following is used in beauty parlours for hair setting?
(a) Chlorine
(b) Sulphur
(c) Phosphorus silicon
(d) Silicon
Option b – Sulphur
Which one of the following is used as a mordant in the dyeing and tanning industry?
(a) Magnesium oxide
(b) Magnesium chloride
(c) Magnesium sulphate
(d) Magnesium carbonate
Option c – Magnesium sulphate
Nail polish remover contains
(a) benzene
(b) formaldehyde
(c) acetic acid
(d) acetone
Option d – acetone
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