On the extraction of iron, the slag produced is
Options
(a) CO (b) FeSiO₃ (c) MgSiO₃ (d) CaSiO₃
Correct Answer:
CaSiO₃
Explanation:
In the extraction of iron, limestone which acts as flux, decomposes […]
XeF₆ on complete hydrolysis gives
Options
(a) Xe (b) XeO₂ (c) XeO₃ (d) XeO₄
Correct Answer:
XeO₃
Explanation:
Partial hydrolysis of XeF₆ yields XeOF₄ and XeO₂F₂ and complete hydrolysis yields xenon trioxide,XeO₃. XeF₆ […]
Vapour pressure of dilute aqueous solution of glucose is 750 mm of mercury at 373K. The mole fraction of solute is
Options
(a) 1/76 (b) 1/7.6 (c) 1/38 (d) 1/0.1
Correct Answer:
1/76
Explanation: […]
Mutarotation does not occur in
Options
(a) sucrose (b) D-glucose (c) L-glucose (d) none of these
Correct Answer:
sucrose
Explanation:
No explanation available. Be the first to write the explanation for this question […]
One gram mole of a gas at NTP occupies 22.4 L.This facts was derived from
Options
(a) Law of gaseous volumes (b) Avogadro’s hypothesis (c) Berzelius hypothesis (d) Dalton’s atomic theory
Correct Answer: […]
Operon model for regulation of transcription was proposed by
Options
(a) Meselon and Stahl in 1998 (b) Jacob and Monod in 1961 (c) Waston and Crick in 1951 (d) none of the above
Insecticides usually act upon
Options
(a) digestive system (b) nervous system (c) circulatory system (d) muscular system
Correct Answer:
nervous system
Explanation:
An insecticide is a pesticide used against insects in all developments […]
Earth originated approximately
Options
(a) 4,500 million years ago (b) 3,600 million years ago (c) between 1,600 – 2,600 million years ago (d) 2.5 million years ago
Correct Answer:
4,500 million years ago
Devices for self-pollination are
Options
(a) dicliny or unisexuality (b) dichogamy (c) heterostyly (d) bisexuality or homogamy
Correct Answer:
bisexuality or homogamy
Explanation:
No explanation available. Be the first to write the explanation […]
Molar volume of CO₂ is maximum at
Options
(a) NTP (b) 0⁰C and 2.0 atm (c) 127⁰C and 1 atm (d) 273⁰C and 2.0 atm
Correct Answer:
127⁰C and 1 atm
Explanation:
No […]
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