If the pH of a solution is 4, then its OH⁻ concentration is
If the pH of a solution is 4, then its OH⁻ concentration is
Options
(a) 10⁻¹⁴ (b) 10 x 10⁻⁵ (c) 10⁻⁴ (d) 10⁻¹⁰
Correct Answer:
10⁻¹⁰
Explanation:
No explanation available. Be the […]
Questions
The property,which can be classified as an intensive property, is
The property,which can be classified as an intensive property, is
Options
(a) volume (b) mass (c) heat capacity (d) temperature
Correct Answer:
temperature
Explanation:
No explanation available. Be the first to write the […]
If heat of formation of C + O₂ → 2CO is ΔH = -110.5 kcal,then heat of combustion
If heat of formation of C + O₂ → 2CO is ΔH = -110.5 kcal,then heat of combustion of carbon is
Options
(a) -94 kcal/mol (b) 110.5 kcal/mol (c) 16.5 kcal/mol (d) 15 […]
Intermolecular hydrogen bond exists in
Intermolecular hydrogen bond exists in
Options
(a) ortho-nitrophenol (b) ethyl alcohol (c) water (d) diethyl ether
Correct Answer:
ortho-nitrophenol
Explanation:
No explanation available. Be the first to write the explanation for this question […]
Polarisation power of a cation increases,when
Polarisation power of a cation increases,when
Options
(a) charge of the cation increases (b) size of the cation increases (c) charge of the cation decreases (d) has no relation to its charge or […]
In a period, the elements are arranged in strict sequence of
In a period, the elements are arranged in strict sequence of
Options
(a) increasing charge in the nucleus (b) equal charges in the nucleus (c) decreasing charge in the nucleus (d) constant charge […]
Which of the following is the most electropositive element
Which of the following is the most electropositive element
Options
(a) Phosphorous (b) Magnesium (c) Aluminium (d) Sulphur
Correct Answer:
Magnesium
Explanation:
No explanation available. Be the first to write the explanation for […]
Electronic configuration of deuterium atom is
Electronic configuration of deuterium atom is
Options
(a) 1s¹ (b) 2s² (c) 2s¹ (d) 1s²
Correct Answer:
1s¹
Explanation:
Atomic number of deuterium = 1
The most probable radius (in pm) for finding the electron in He⁺ is
The most probable radius (in pm) for finding the electron in He⁺ is
Options
(a) 0 (b) 52.9 (c) 26.5 (d) 105.8
Correct Answer:
26.5
Explanation:
Most probable radius = a₀ / Z
where […]
If 18g of water is electrolysed then volume of oxygen obtained at STP is
If 18g of water is electrolysed then volume of oxygen obtained at STP is
Options
(a) 11.2 L (b) 2.8 L (c) 22.4 L (d) 5.6 L
Correct Answer:
11.2 L
Explanation:
2H₂O(36g)→ […]