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Bleaching powder is made from 1 Sulphur dioxide and gypsum 2 Chlorine and charcoal 3 Soda ash and lilme 4 Lime and chlorine
2 14683The two elements that are frequently used for making transistors are 1 Boron and aluminium 2 Silicon and germanium 3 Iridium and tungsten 4 Niobium and columbium
2 20604Which of the following gases is not known as green house gas? 1 Carbon dioxide 2 Methane 3 Nitruous oxide 4 Hydrogen
4 25918Which of the following is not a neutral oxide? 1 Carbon monoxide 2 Sulphur dioxide 3 Nitric oxide 4 Water
1 8165Titanium is purified by 1 Zone refining 2 Electrolysis 3 Van Arkel method 4 Hydraulic washing
4 14127Which of the following is used in making smoke bombs? 1 Sulphur 2 phosphorus 3 Hydrogen 4 Carbon
1 7066Which of the following is not a bleaching agent? 1 Sulphur dioxide 2 Carbon dioxide 3 Sodium hypochlorite 4 Chlorine
1 13647The gas usually filled in the eletric h\bulb is 1 Hydrogen 2 Oxygen 3 Nitrogen 4 Carbon dioxide
2 5665The 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
1 11486
Name the metal that burns in oxygen with a dazzling white flame
You want to estimate the evaporation through lakes. How would you do it?
Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?
Which are the most abundant metal and third abundant element in the earth crust?
Which animal live in hot region?
Why would farmers, doctors, and manufacturers be interested in Genetic Engineering?
What is the mode of action for quaternary ammonium compounds?
How many types of impurites in Related compound test?
How the Algorithm works?
Paano po ba nabubuo ang eclipse?
Name two enzymes that have been employed for elisa?
what is the composition of red rice?
How do you ensure effective communication and build rapport with patients from diverse cultural backgrounds, especially when discussing sensitive neurological issues?
What is weak acid?
Explain when is fluorescence strong?
