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Which type of compounds show high melting and boiling points:
(1) Electrovalent compounds
(2) Covalent compounds
(3) Coordinate compounds
(4) All the three types of compounds have equal melting and boiling points
Ans: Electrovalent compounds
The boron trihalides are highly volatile; BF 3 (b. p., 173 K) and BCI 3 , (b. p., 260.5 K are gases, BBr 3 a volatile liquid (b. p., 319 K) and Bl 3 a low melting solid (m. p.,
The emission spectrum of hydrogen is found to satisfy the expression for the energy change. teiangle E (in joules) such thatTriangle E= 2.18x10(1/n 2 1 - 1/ n 2 1 ) J where n
i am not able to understand difference between emphasising and reflexive pronoun
OSCILLATOR THEORY OF LIQUID
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Methods for Manufacture of Soaps There are the following three methods for manufacture of soaps: (a) The cold process (b) The hot process (c) Modern process
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