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cos h^-1 x =

1) log [x + √x2 + 1] 2) log [x – √x2 – 1] 3) log [x – √x2 –... View Article

1) log [x + √1 – x2] 2) log [x + √x2 + 1] 3) log [x + √x2 –... View Article

1) 2πi 2) πi 3) πi / 2 4) 2π Solution: (3) πi / 2 cos h (4x) = cos... View Article

1) 2π 2) π 3) 2πi 4) πi Solution: (3) 2πi ez is a periodic function with period 2πi.

1) πi / n 2) 4πi / n 3) nπi / 4 4) πi Solution: (2) 4πi / n cot... View Article

1) 1 2) -1 3) 2 cos h2 x 4) cos hx Solution: (1) 1 sin ix = i sin... View Article

1) [ex + e-x] / 2 2) [ex – e-x] / 2 3) [ex – e-x] / 2i 4) [ex... View Article

Steel is more noble than aluminium. Noble metals resist oxidation even at a very high temperature.

Oxygen atoms lie in group 16. It has an atomic number 8 with valence electron 8. The orbital representation is... View Article

Is 3 Methylhexane optically active because of the chiral carbon and the unsymmetry of the molecules.

Threonine can exist in four possible optical isomers with the configuration (2S,3R), (2R,3S), (2S,3S) and (2R,3R).

Yes, 2 Chlorobutane optically active.

When hydrogen loses an electron it becomes a positively charged hydrogen ion. A hydrogen ion is therefore referred to as... View Article

Free radicals are the molecules with unpaired electrons and they are unstable. Since they are unstable, they will constantly try... View Article

The pure form of nitric acid is colourless. It is very unstable when the heat is absorbed. The thermal decomposition... View Article

HClO2 is stronger than HClO. The acid is stronger when the number of oxygen atoms is more.

Sulphur as a molecule does not carry any charge. Sulphur has the electronic configuration of 2,8,6. It has to gain... View Article

Covalent hydrides are formed when hydrogen combines with one or more nonmetals to form a compound. Hydrochloric acid (HCl), in... View Article

When larger nuclei combine during nuclear fusion no energy will be released. Since nuclear force is a short-range force it... View Article

The average binding energy per nucleon is equal to the total binding energy divided by the total number of nucleons.... View Article