The oxidation number of phosphorus and basicity of acid in pyrophosphoric acid
The oxidation number of phosphorus and basicity of acid in pyrophosphoric acid respectively are Options (a) four and three (b)…
7 years ago
P Block Elements in Group 15
The solubility of I₂ increases in water in the presence of
The solubility of I₂ increases in water in the presence of Options (a) KMnO₄ (b) KI (c) C₂S (d) H₂SO₄…
7 years ago
The elements with atomic number 9,17,35,53,85 are called
The elements with atomic number 9,17,35,53,85 are called Options (a) inert gases (b) halogens (c) chalcogens (d) cnicogens Correct Answer:…
7 years ago
In NH₃ and PH₃, the common feature is
In NH₃ and PH₃, the common feature is Options (a) basic nature (b) odour (c) acidic nature (d) combustibility Correct…
7 years ago
Which of the following oxides of nitrogen is paramagnetic
Which of the following oxides of nitrogen is paramagnetic Options (a) NO₂ (b) N₂O₃ (c) N₂O (d) N₂O₅ Correct Answer:…
7 years ago
Which of the following has ability to release bromine from potassium bromide
Which of the following has ability to release bromine from potassium bromide Options (a) Iodine (b) Bromine (c) Fluorine (d)…
7 years ago
Bromine water reacts with SO₂ to form
Bromine water reacts with SO₂ to form Options (a) HBr and S (b) H₂O and HBr (c) S and H₂O…
7 years ago
Which of the following has zero valency
Which of the following has zero valency Options (a) He (b) H (c) O (d) Na Correct Answer: HeExplanation:No explanation…
7 years ago
The oxidising ability of halogens
The oxidising ability of halogens Options (a) increases from fluorine to iodine (b) decreases from fluorine to iodine (c) increases…
7 years ago
Ozone is formed in the upper atmosphere from oxygen by the action of
Ozone is formed in the upper atmosphere from oxygen by the action of Options (a) ultraviolet rays (b) cosmic rays…
7 years ago