In Lassaigne’s test red colour precipitate is obtained which is due to formation
In Lassaigne's test red colour precipitate is obtained which is due to formation of Options (a) FeCNS (b) Fe(CNS)₂ (c)…
7 years ago
Chemistry
The hybridisation of carbon in diamond ,graphite and acetylene is in the order of
The hybridisation of carbon in diamond ,graphite and acetylene is in the order of Options (a) sp sp² sp³ (b)…
7 years ago
Which of the following has a tendency for covalent compound formation
Which of the following has a tendency for covalent compound formation Options (a) Na (b) Mg (c) Ca (d) Ba…
7 years ago
Which of the following is not efflorescent?
Which of the following is not efflorescent? Options (a) NaOH (b) CuSO₄ (c) MgSO₄ (d) Hydrated CuSO₄ Correct Answer: Hydrated…
7 years ago
When KMnO₄ reacts with KBr in alkaline medium gives bromate ion. Then oxidation
When KMnO₄ reacts with KBr in alkaline medium gives bromate ion. Then oxidation state of Mn changes from +7 to…
7 years ago
The change in oxidation state of sulphur when sulphur dioxide is passed
The change in oxidation state of sulphur when sulphur dioxide is passed in an acidified K₂Cr₂O₇ solution is from Options…
7 years ago
At 25⁰C the pH value of a solution is 6, then the solution is
At 25⁰C the pH value of a solution is 6, then the solution is Options (a) acidic (b) neutral (c)…
7 years ago
The precipitation occurs if ionic product is
The precipitation occurs if ionic product is Options (a) equal to solubility product (b) less than solubility product (c) more…
7 years ago
Which among the following is an extensive property of the system
Which among the following is an extensive property of the system Options (a) Temperature (b) volume (c) Refractive index (d)…
7 years ago
When enthalpy and entropy change for a chemical reaction are – 2.5 x 10³ cals
When enthalpy and entropy change for a chemical reaction are - 2.5 x 10³ cals and 7.4 cals deg⁻¹ respectively…
7 years ago