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An aqueous solution of copper sulphate is acidic in nature because the salt undergoes
In an atom, the order of filling up of the orbitals is governed by
Which one of the following is the correct sequence in increasing order of molecular weights of the hydrocarbons ?
Match List-I with List-II and select the correct answer using the codes given below the lists: List-I List-II (Characteristic ) (Particle ) A. Zero mass 1. Positron B. Fractional charge 2. Neutrino C. Fractional spin 3. Quark D. Integral spin 4. Phonon
Which one of the following is NOT radioactive ?
Match List-I with List-II and select the correct answer using the codes given below the lists: List-I List-II A. German silver 1. Tin B. Solder 2. Nickel C. Bleaching Powder 3. Sodium D. Hypo 4. Chlorine
A small pouch containing silica gel is often found in bottles of medicine in tablet or powder form because silica gel
Consider the following statements: Hard water is not suitable for 1. Drinking 2. Washing clothes with soap 3. Use in bollers 4. Irrigating crops Which of these statements are correct ?
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Aluminium surfaces are often 'anodized '. Thic means the deposition of a layer of
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