Permanent hardness of water, due to sulphates of the metal,
can be destroyed by the use of
1 Nitrates
2 Zeolites
3 Sulphontes
4 None of these
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Dear Sir I have got through cable size calculation 10 sq mm cable size of one panel, how i be sure that used cable is 10sqmm. a) By measuring each strand of cpper & multilpy by pye and so on...... or By measuring any one cable core with insulation only.
Which are the research centres of department of atomic energy?
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Which one of the following is the petroleum wax? 1 Bees wax 2 Carnauba wax 3 Paraffin wax 4 Jojoba wax
The Purest form of water can be obtained from:- I) a deep tube well II) a running stream III) a hot water spring IV) a heavy shower of rain
difference between typewriter and computer?
Wood is the main raw material for the manufacture of 1 Paint 2 Paper 3 Ink 4 Gun powder
5 Answers Jharkhand Staff Selection Commission JSSC, RRB,
How does common salt help in separating soap from the solution after saponification ? 1 By decreasing solubility of soap 2 By increasing solubility of soap 3 By decreasing density of soap 4 By increasing density of soap
Which of the following metals was first discovered by man? 1 Bronze 2 Silver 3 Iron 4 Copper
Which of the following types of photons has the highest energy? 1 Visible radiations 2 Radio waves 3 Gamma rays 4 X-rays
A moderator is used in nuclear reactors in order to 1 Increase the number of neutrons 2 Decrease the number of neutrons 3 Slow down the speed of neutrons 4 Accelerate the neutrons