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The most acidic compound among the following is: (a) phenol (b) ethanol (c) 3,5-dinitrophenol (d) 4,4-methoxyphenol

The correct answer is option (c) i.e 3, 5-dinitrophenol. Nitro is a -- R group i.e strong electron withdrawing group. Hence, more than any other... View Article

When Na₂CO₃ is heated it gives: (a) Na₂O (b) CO₂ (c) Both (a) and (b) (d) NO₂

Na2CO3 is the chemical formula of sodium bicarbonate. It undergoes a thermal decomposition reaction on heating. The reaction of decomposition is... View Article

Explain filtration with help of examples and diagram.

Filtration is technically defined as the process of separating suspended solid matter from a liquid, by causing the latter to pass through the... View Article

Draw the electron dot structure of H2.

The electron dot structure or Lewis structure of H2 (H-H) is given below:... View Article

The correct order of a dipole moment is: A. CH4 < NF3 < NH3 < H2OB. NH3 < NF3 < CH4 < H2OC. NF < CH4 < NH3 < H2OD. H2O < NH3 < NF3 < CH4

Answer: A. CH4 < NF3 < NH3 < H2O A dipole moment arises in any system in which there is a separation of charge. They can, therefore,... View Article

The chemical formula of magnesium sulphate is:

The chemical formula of magnesium sulphate is MgSO4. Also see: Magnesium Sulphate Formula... View Article

Ammonia and hydrogen chloride gases are mixed. Which type of chemical reactions it gives?

Ammonia = NH3 Hydrogen Chloride = HCl NH3 + HCl ---> NH4Cl Thus the resulting compound is Ammonium chloride... View Article

Identify conductor and insulator from following :- Sulphur , Silver , Copper , Cotton , Aluminium , Air , Nichrome , Graphite , Paper , Porcelain , Mercury, Mica , Bakelite , Polythene , Manganin.

Conductors are: Silver , Copper , Aluminium , Nichrome , Graphite , Mercury , Manganin. Insulators are: Sulphur , Cotton , Air , Paper ,... View Article

The order of stability of the following carbocations:

The order of stability of the given carbocation is: III > I > II... View Article

Assign the oxidation number to MN in K2 MnO4.

Let us say oxidation state of Mn is x. Now, we know, the oxidation state of Oxygen is -2 and that of Hydrogen is +1. Therefore, K2MnO4: 2 + x... View Article

Brass is a solution of molten copper in (a) solid zinc (b) molten zinc (c) gaseous zinc (d) molten tin

Answer: (b) molten zinc Brass is a solution of molten copper in molten zinc.... View Article

Why is NH4OH a weak base when it has more concentration of H ions than OH ions?

NH4OH a weak base because it has higher H+ concentration than a stronger base. Ammonia is a typical weak base. Ammonia itself obviously doesn't... View Article

What is the number of sigma bond in P4O10?

The number of sigma bonds (σ-bonds) in P4O10 is 16.... View Article

Uses of metals and non metals in daily life

Uses of metals Metals are used in the construction industry, in electronics, in medicine, machinery, refractory and automobiles, decorative... View Article

What is valency of sodium?

The valency of sodium is 1. The atomic number of sodium is 11 Electron configuration of sodium = 2, 8, 1 Therefore, there is only 1 electron... View Article

Which of the following are peroxoacids of sulphur? (A) H2SO5andH2S2O8 (B) H2SO5andH2S2O7 (C) H2S2O7andH2O8 (D) H2S2O6andH2S2O7

Answer: (A) H2SO5 and H2S2O8... View Article

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