Copper pyrite, the chief ore of copper, is
Copper pyrite, the chief ore of copper, is Options (a) CuFeS₂ (b) Cu₂S (c) CuCO₃.Cu(OH)₂ (d) Cu₂O Correct Answer: CuFeS₂Explanation:CuFeS₂…
7 years ago
Chemistry
Which one of the following is a false statement
Which one of the following is a false statement Options (a) Cell fluid is an example of sol (b) Butter…
7 years ago
If the initial concentration of the reactant is doubled, the time for half
If the initial concentration of the reactant is doubled, the time for half reaction is also doubled. Then the order…
7 years ago
The rate of reactions exhibiting negative activation energy
The rate of reactions exhibiting negative activation energy Options (a) decreases with increasing temperature (b) increases with increasing temperature (c)…
7 years ago
The conductivity of strong electrolyte
The conductivity of strong electrolyte Options (a) does not change with dilution (b) depends upon density of electrolytes itself (c)…
7 years ago
In Kjeldahl’s mathod, the nitrogen present is estimated as
In Kjeldahl's mathod, the nitrogen present is estimated as Options (a) N₂ (b) NH₃ (c) NO₂ (d) N₂O₃ Correct Answer:…
7 years ago
Which of the following shows linear structure
Which of the following shows linear structure Options (a) acetylene (b) CCl₄ (c) ethane (d) ethene Correct Answer: acetylene Explanation:…
7 years ago
0.765 gm of acid gives 0.55 g of CO₂ and 0.12 g of H₂O.Then find the ratio
0.765 gm of acid gives 0.55 g of CO₂ and 0.12 g of H₂O.Then find the ratio of the percentage…
7 years ago
n-Butane and isobutane are
n-Butane and isobutane are Options (a) positional isomers (b) chain isomers (c) functional isomers (d) metamers Correct Answer: chain isomersExplanation:No…
7 years ago
Bond length between hybridised carbon atom and other carbon atom is minimum in
Bond length between hybridised carbon atom and other carbon atom is minimum in Options (a) propene (b) butane (c) propane…
7 years ago