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QJEE MAIN 2022
Which of the following pair of molecules contain odd electron molecule and an expanded octet molecule?
JEE MainChemistryEasy
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QJEE MAIN 2022
$$ \begin{aligned} & \mathrm{C}(\mathrm{~s})+\mathrm{O}_2(\mathrm{~g}) \rightarrow \mathrm{CO}_2(\mathrm{~g})+400 \mathrm{~kJ} \\ & \mathrm{C}(\mathrm{~s})+\frac{1}{2} \mathrm{O}_2(\mathrm{~g}) \rightarrow \mathrm{CO}(\mathrm{~g})+100 \mathrm{~kJ} \end{aligned} $$ When coal of purity $60 \%$ is allowed to...
JEE MainChemistryMedium
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QJEE MAIN 2022
For the given circuit the current through battery of 6V just after closing the switch ‘S’ will be ……….A.
JEE MainPhysicsEasy
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QJEE MAIN 2022
Which of the following can be used to prevent the decomposition of H2O2?
JEE MainChemistryEasy
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QJEE-Main 2022
The photochemical smog does not generally contain :
JEE MainPhysicsEasy
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QJEE MAIN 2022
The velocity of a small ball of mass 0.3 g and density 8 g/cc when dropped in a container filled with glycerine becomes constant after...
JEE MainPhysicsMedium
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QJEE MAIN 2022
Given below are two statements : One is labeled as Assertion A and the other is labeled as Reason R Assertion A : Zero orbital...
JEE MainChemistryEasy
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QJEE-Main 2022
The interhalogen compound formed from the reaction of bromine with excess of fluorine is a :
JEE MainChemistryEasy
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QJEE MAIN 2022
Refining using liquation method is the most suitable for metals with :
JEE MainChemistryEasy
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QJEE MAIN 2022
A metal wire of length 0.5 m and cross-sectional area $10^{-4} \mathrm{~m}^2$ has breaking stress $5 \times 10^8 \mathrm{Nm}^{-2}$. A block of 10 kg is...
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