How does common salt help in separating soap from the
solution after saponification?
1 By decreasing solubility of soap
2 By increasing solubility of soap
3 By decreasing density of soap
4 None of these
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Glass is made of the mixture of 1 Quartz and mica 2 Sand and salt 3 Sand and silicates 4 None of these
Who commanded the challenger’s first flight?
Potassium permanganate is used for purifying drinking water, because 1 It is dissolves the impurities of water 2 It is a sterilizing agent 3 It is an oxidizing agent 4 It is a reducing agent
Photosynthesis is 1 An exothermic process 2 An endothermic process 3 A neutral process 4 A thermostatic process
What are all of the uses for a dynamo?
Which is the largest refractor telescope?
Water is neither acidic nor alkaline because 1 It cannot accept or donate protons 2 It boils at a high temperature 3 It can dissociate into equal number of hydrogen ions 4 It cannot donate or accept electrons
The gases used in different types of welding would include 1 Oxygen and hydrogen 2 Oxygen, acetylene and argon 3 Oxygen and acetylene 4 None of these
Who invented telescope?
Which of the following is commonly called a ‘polyamide’? 1 Rayon 2 Orlon 3 Terylene 4 Nylon
Two or more forms of a chemical element having different physical properties but rising to identical chemical compounds are called 1 Allotropes 2 Isotopes 3 Isomers 4 Isotones
Mesons are found in 1 ?-rays 2 Laser beam 3 X-rays 4 Cosmic rays
3 Answers ABC, Indian Army, JSSC,
Biological Sciences 
