According to Dalton’s atomic theory, the smallest particle
which can exist independently is
1 An atom
2 A molecule
3 A cation
4 An anion
Chemical formula for water glass is 1 Na2Sio3 2 Al2O3 3 NaA1O2 4 CaSiO3
What are quasars?
Science is both a process and product-Substantiate
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Which is the largest comet?
Why sun seems to be a red colour while sun-rising and sun- setting?
what are the advantages and disadvantages of rational knowledge?
The difference between a nuclear reactor and an atom bomb is that 1 No chain reaction takes place in nuclear reactor while in the atomic bomb there is a chain reaction 2 No chain reaction takes place in atomic bomb while it takes place in a nuclear reactor 3 The chain reaction in nuclear reactor is controlled 4 None of these
what does the haversian central canal in each osteon contains?
Which of the following characteristics is not-shown by hydrogen? 1 It burns in air to form water 2 It supports combustion 3 It combines with almost all the metals forming hydrides 4 None of these
What is one light minute?
Which of the following reactions is used for increasing the number of carbon atoms in a chain? 1 Substitution reaction 2 Wurtz reaction 3 Friedel – Crafts reaction 4 Cannizzaro’s reaction
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