What is the wavelength of visible spectrum?
1 1300A-3000A
2 3900A-7600A
3 7800A-8000A
4 8500A-9800A
WHATE COLOUR OF STAR;SIZE;
Which of the following is a chemical change? 1 Rusting of iron 2 Tempering of iron 3 Melting of iron 4 Bending of iron
The ore of which of the following metals can be concentrated by hydraulic washing? 1 Tin 2 Sodium 3 Iron 4 Manganese
A mixture of iron filings and sand can be separated by 1 Heating 2 Sublimation 3 Hand picking 4 Magnetic separation
What is length and weight of arihant?
What are soaps? 1 Salts of silicates 2 Esters of heavy fatty acids 3 Sodium or potassium salts of heavier fatty acids 4 Mixture of glycerol and alcohols
Which scientists gave detailed information about nebula?
The human skull rests on which bone? a)Manubrium b)Atlas c)Mandible d)Sternum
Which of the following minerals has the lower numerical hardness value? 1 Talc 2 Gypsum 3 Apatite 4 Topaz
What do you understand by nutritive constituents of food ?
Which of the following materials are used for preparing blur-black ink? 1 Gallic acid 2 Tannic acid 3 Ferrous sulphate 4 All of these
'which country has 6 months night and 6 months day'
78 Answers Asefa, Goal Technologies, IHCL, Karibu, ONGC, TATA, UET,