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methane is not present in
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a) INDANE b) MARSH GAS C) BIO GAS D) FIRE DAMP
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The dark lines in the solar spectrum are due to 1 Absorption of corresponding wavelengths by the prism used in he spectrograph 2 Destructive interference between waves of certain definite wavelengths 3 Absorption of corresponding wavelengths by the outer layers of the sun 4 None of these
The country helped in arihant’s built?
Which of the following was to be discovered first in the chromo sphere of the sun? 1 Xenon 2 Helium 3 Neon 4 Krypton
Water is a compound because 1 It exists as a solid, a liquid or a gas 2 It contains hydrogen and oxygen 3 It contains two different elements joined by chemical bonds 4 It cannot be split up into simpler substances by chemical means
In laundry soaps, a material called ‘filler’ is used. Which of the following is a ‘filler? 1 Talc 2 Sodium silicate 3 Soda ash 4 Sodium phosphate
Mesons are found in 1 ?-rays 2 Laser beam 3 X-rays 4 Cosmic rays
3 Answers ABC, Indian Army, JSSC,
Which of the following acids is used for ‘etching glass’? 1 HBrO3 2 H2F2 3 HCIO4 4 HIO4
exactly how does an RTD 3 wire or 4 wire device cancel out the resistance of the wires , opposed to a 2 wire RTD? Is it because you have resistors in parallel , or because something to do with the electronic circuit the RTD is connected to ?
Which is india’s largest nuclear research reactor?
Which of the following is the basis of modern periodic table? 1 Atomic mass 2 Atomic number 3 Atomic size 4 Atomic volume
what is composition of fizzy drinks
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
Biological Sciences 
