The empirical formula of an acid is CH₂O₂ , the probable molecular formula of acid may be
Options
(a) CH₂O (b) CH₂O₂ (c) C₂H₄O₂ (d) C₃H₆O₄
Correct Answer:
CH₂O₂
Explanation:
The molecular formula […]
The process associated with sodium carbonate manufacture is known as….process
Options
(a) Chamber (b) Haber (c) Le-Blanc (d) Castner
Correct Answer:
Le-Blanc
Explanation:
No explanation available. Be the first to write the explanation […]
Which of the following shows electrical conduction?
Options
(a) Sodium (b) Potassium (c) Diamond (d) Graphite
Correct Answer:
Graphite
Explanation:
No explanation available. Be the first to write the explanation for this question […]
Which of the following is a redox reaction
Options
(a) Evaporation of H₂O (b) Both oxidation and reduction (c) H₂SO₄ with NaOH (d) In atmosphere O₃ from O₂ by lighting
Correct Answer:
Both […]
In the reaction : 2P₂O₅ + 2HNO₃ → P₄O₁₀ + x, the term x is
Options
(a) N₂O₄ (b) H₂O only (c) N₂O₅ (d) PNO₃
Correct Answer:
N₂O₅
Explanation:
No explanation available. Be […]
Which of the following is the buffer solution
Options
(a) CH₃COOH + CH₃COONa (b) CH₃COOH + CH₃COONH₄ (c) CH₃COOH + NH₄Cl (d) NaOH + NaCl
Correct Answer:
CH₃COOH + CH₃COONa
Explanation:
No explanation […]
Indicator used in the titration of oxalic acid and NaOH is
Options
(a) phenolphthalein (b) methyl red (c) thymol blue (d) methyl orange
Correct Answer:
phenolphthalein
Explanation:
No explanation available. Be the first […]
The combustion enthalpies of carbon , hydrogen and methane are -395.5 kJ mol⁻¹,-284.8 kJ mol⁻¹ and -890.4 kJ mol⁻¹ respectively at 25⁰ C. The value of standard formation enthalpies of methane at that temperature is […]
In an isobaric process, the ratio of heat supplied to the system (dQ) and work done by the system (dW) for diatomic gas is
Options
(a) 1:1 (b) 7:2 (c) 7:5 (d) 5:7
The shape of the molecule XeF₄ is
Options
(a) tetrahedral (b) square plannar (c) octahedral (d) trigonal
Correct Answer:
square plannar
Explanation:
No explanation available. Be the first to write the explanation for […]
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