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iTeachChem

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Matrices: Evaluation of Determinant

Tried factorizing it, but didn't work.
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Matrices: Dependency of AB on A&B

I have no idea how to approach this.
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MATHS: Limit (class 11)

KOI HAI JO 4TH PART SOLVE KAR SAKTA HAI
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Chemical kinetics, order confusion

In the solution they've just directly used the first order equation (since overall order = 1) and got the answer. How did that work? Isn't the reaction half order with respect to A, so it should behave as such?
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STRAIGHT LINES

isme is this the correct diagram ??? if yes then seedha distance formula use krke aa jayega yeh toh...
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Thermodynamics

In many questions, if constant external pressure was mentioned we took it as Irreversible process, but in this question they have mentioned const ext p + rev. So what's the drawback?
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ΔU

Question says "same condition" meaning ΔT=0 so ΔU= f(T) so why in this case ΔU is not 0?
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SHM

can we use T=2pisqrt(I/mgl) here?
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periodic table

shouldn’t answer be B?
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Haloalkanes, more polar/less polar for reaction

All I remember learning is that SN2 prefers polar aprotic, and SN1 prefers polar protic. What's the concept behind this question? (both statements are true)...
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HBO

is this correct?? HBO-hydroboration oxidation...
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hydrocarbons

arrange the following compounds in correct order of rate of decarboxylation methanoic acid ethanoic propanoic benzoic...

PnC Queue

how come we dont do the "once in front of boys and once in the most back" in the first case???
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tautomerism

given compound is exposed to D2O/OD- for a long time , give the structure of the final product with mechanism
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No of acidic hydrogen

Shouldnt The most acidic hydrogen be C sir said its B , just said its because of delocalistaion
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Basicity Order

ans is C why is 2 more basic than 4
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