Cement is usually a mixture of
1). Calcium silicate and calcium aluminate
2). Calcium silicate and calcium ferrate.
3). Calcium aluminate and calcium ferrate
4). Lime stone and silicon dioxide
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1. Molasses a byproduct in the manufacture of sugar is converted into
3. The sewage obtained from water closets and urinals is known as
4. Which one element has the highest electronegativity value
5. The long range potential of nu I clear energy in India depends on i its reserves of
6. Which of the following is ozone depleting pesticide ?
7. Which of the following gases is most toxic
8. Question 6.3:The enthalpies of all elements in their standard states are:(i) unity(ii) zero(iii)
9. The Fungus which is used in the alcohol industry is .
10. Which of the following elements has the lowest melting point?