General Studies : General Science
1-The mid air swing of a spinning football can be explained on the basis of Bernoulli’s principles.
2-Light travels faster in air than in water.
3-Cobalt 60 is generally used in radiation theory because it emits gamma rays.
4- Chloroxylenol antiseptic compound is present in Dettol.
5- Calcium chloride is a compound that is a white solid which absorbs water vapour from the air.
6-Mercury metals forms an amalgum with other metals.
7- Mortar is a tick paste of cement, sand and water .
8- Silicon element forms the highest number of compounds in the periodic table
9-Stainless steel is an alloy of Iron, Chromium and Nickel.
10- How does addition of ethylene dibromide help to petrol? – Elimination of lead oxide.
11-Red Phosphorus is used in safety metals.
12- What do we call the process of separation of pure water from impurities? – Distillation.
13-Nitrous oxide is laughing gas.
14-From Pitchblende mineral is radium obtained.
15-Tetraethyl lead is used as Petrol additive.
16-The element common to all acids is Hydrogen.
17-Silicon Carbide is used for cutting very hard substances.
18- What is the name of gas which is present in both the natural gas and the biogas? – Methane.
19- With which liqued is anomalous expansion associated? – Water
20- What is alcohol obtairied in the saponification process? – Glycerol.
21-Which is used to dilute oxygen in the gas cylinders used by divers? – Helium.
22-Which is the nuclear particle having no mass and no charge, but only spin? – Neutrino.
23-Of which alloy the commonly used safety fuse-wire is made? – Alloy of Tin and Lead
24- Of which Container radioactive materials should be kept? – Pb
25- Ethanol containing 5% water By which name is it known? – Rectified spirit
26-Which is not an anaesthetic agent in surgical operations? – Acetone
27- What is the percentage of Nitrogen, present in ammonium sulphate? – 21%
28- Which metal can deposit copper from copper sulphate solution? – Iron
29- Sodium stearate is a salt and how is it used? – To make soap
30- Which are the two main constituents of granite? – Iron and silica
31- Which method of water purification does not kill microorganism? – Filtration
32- On heating, Gypsum loses certain percentage of its water content and what does it become? – Plaster of Paris
33- By which was the presence of Cobalt. in Vitamin B-12 established for the first time? – Borax-Bead test
34- The pH of fresh milk is 6. When it turns sour, what will be the pH? – Less than 6
35- Which group of gases contribute to the “Green House effect”? – Carbon dioxide and Methane
36- Which gase is supporter of combustion? – Oxygen.
37-The most abundant metal in the earth’s crust is Aluminium.
38-German Silver is an alloy of Zinc, Copper & Nickel.
39-The element present in the largest amount in rocks and minerals is Silicon.
40-The charcoal used to decolourise raw sugar is Wood charcoal