Why is it necessary to cook food ?

1 Answers  

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Which of the following substances undergoes chemical change on heating? 1 Sodium chloride 2 Silica 3 Lead nitrate 4 Platinum wire

2 Answers  

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what is the food constitution of ragi and rice

1 Answers  

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how is electricity converted from the potential energy of water falling from dams?

3 Answers   HLL, KIH, Reliance,

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Who was the first cosmonaut?

0 Answers  

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Atoms of an element differ from those of all other elements in 1 Atomic number and electronic configuration 2 Atomic number and number of valence electrons 3 Number of neutrons and electronic configuration 4 None of these

2 Answers  

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Heavy water is 1 Tritium oxide 2 Deuterium oxide 3 Rain water 4 None of these

2 Answers  

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Which of the following metals can displace hydrogen from dilute acids? 1 Zinc 2 Gold 3 Copper 4 Silver

1 Answers   Petit Seminaire,

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In which of the following processes light energy is converted into chemical energy? 1 Respiration 2 Fermentation 3 Photosynthesis 4 Photoresiration

2 Answers  

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What are the aluminium alloys that you supply?

1 Answers   Hyundai,

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Which among the following is a positively charged particle emitted by a radioactive element? 1 Alpha ray 2 Beta ray 3 Gamma ray 4 Cathode ray

2 Answers  

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Who suggested that most of the mass of the atom is located in the nucleus? 1 Thompson 2 Bohr 3 Rutherford 4 None of these

3 Answers   Thomson,

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