chemistry

Quiz

Water – based liquids can be described as acidic, neutral, or basic, with respect to pH. Which of these describes milk? (a) Slightly acidic (b) Strong acid (c) Neutral (d) Slightly Basic (e) Milk does not have a pH

Shivaye Singh 28 Mar, 2020

Ans :

Slightly acidic

The symbol Sb stands for stibnum or stibnite. What is the modern name of this element? (a) Arsenic (b) Tin (c) Antinomy (d) Samarium (e) Seaborgium

Shivaye Singh 28 Mar, 2020

If you fill a glass to the brim with ice water and the ice melts, what will happen? (a) The glass will over flow as the ice turns to water. (b) The level of water in the glass will remains unchanged as the ice melts (c) The water level will drop slightly as the ice melts. (d) I will never find out because I will drink the water or walk away before anything happens.

Shivaye Singh 28 Mar, 2020

Ans :

The level of water in the glass will remains unchanged as the ice melts

One of the essential minerals in the human body is salt. How much salt (NaCl) is in the average adult human body? (a) 1 kilogram (b) 500 grams (c) 250 grams (d) practically none

Shivaye Singh 28 Mar, 2020

Diamond and Graphite are (a) allotropes (b) isomorphous (c) isomers (d) isobars

Shivaye Singh 28 Mar, 2020

Ans :

Allotropes

Which of the following chemicals is used in photography? (a) Aluminum hydroxide (b) Silver bromide (c) Potassium nitrate (d) Sodium chloride

Shivaye Singh 28 Mar, 2020

Ans :

Silver bromide

Smoke is formed due to (a) solid dispersed in gas (b) solid dispersed in liquid (c) gas dispersed in solid (d) gas dispersed in gas

Shivaye Singh 28 Mar, 2020

Ans :

Solid dispersed in gas

Preparation of ‘Dalda or Vanaspati’ ghee from vegetable oil utilizes the following process (a) Hydrolysis (b) Oxidation (c) Hydrogenation (d) Ozonolysis

Shivaye Singh 28 Mar, 2020

Ans :

Hydrogenation

Vulcanization of rubber is carried out by adding (a) Sulphur (b) Carbon (c) Ozone (d) Phosphorous

Shivaye Singh 28 Mar, 2020

The polymer used in making plastic crockery is (a) Decron (b) Nylon (c) Bakelite (d) Melamine

Shivaye Singh 28 Mar, 2020

Which of the following acids is manufactured using sawdust? (a) Oxalic acid (b) Citric acid (c) Acetic acid (d) Butyric acid

Shivaye Singh 28 Mar, 2020

Ans :

Oxalic acid

When formaldehyde and potassium hydroxide are heated, we get (a) Acetylene (b) Methyl alcohol (c) Methane (d) Ethyl formate

Shivaye Singh 28 Mar, 2020

Ans :

Ethyl formate

Electron was discovered by (a) Ernest Rutherford (b) Max Planck (c) Joseph Thomson (d) Albert Einstein

Shivaye Singh 28 Mar, 2020

Ans :

Joseph Thomson

A substance which readily forms colloidal solution in contact with water is called (a) Extrinsic colloid (b) Associated colloid (c) Hydrophobic colloid (d) Hydrophilic colloid

Shivaye Singh 28 Mar, 2020

Ans :

Hydrophilic colloid

Which one of the following is pure water? (a) Rainwater (b) Filter water (c) Tube well water (d) Distilled water

Shivaye Singh 28 Mar, 2020

By – product obtained by soap – industry is (a) Caustic soda (b) Glycerol (c) Naphthalene (d) Caustic potash

Shivaye Singh 28 Mar, 2020

Which of the following metals form an amalgam with other metals? (a) Lead (b) Tin (c) Zinc (d) Mercury

Shivaye Singh 28 Mar, 2020

Which velocity of coal contains recognizable traces of the original plant material? (a) Anthracite (b) Lignite (c) Peat (d) Bitumen

Shivaye Singh 28 Mar, 2020

Which of the following is the petroleum wax? (a) Bees wax (b) Carnauba wax (c) paraffin wax (d) Jojoba wax

Shivaye Singh 28 Mar, 2020

Ans :

Paraffin wax

The fourth state of matter is “Known as (a) Gas (b) Vapor (c) Plasma (d) Electrons

Shivaye Singh 28 Mar, 2020

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