Doubts from JEE PYQs


Iss question ka none of these answer hona chahiye

option d Na3AlF6 acts as solvent not electrolyte

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According to me it acts as both.

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Ye kis chapter me padega ? Metallurgy ka toh nahi hai

@Gaurav_Singh halogen aur d bock done mein aa sakta hai

Screenshot 2021-01-17 at 5.47.02 AM
why will option (c) not participate in acid-base reaction?


ans given is (C)…
but this link says contrary— My organic doubts - #680 by Dexter27
which one is correct now?

@Lavesh @Achyut_Singh @Anorak @allreading this

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It should be B right :thinking:

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OCH3 doesn’t have such a good acidic hydrogen to get removed.
Answer is (B)

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(C)

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C option me ye FG konsa hh? OCO3H toh pehli baar dekha maine :thinking::thinking:

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full form pls :sweat_smile:

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Functional group

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they mistyped the option…its och3 (just searched the q) :neutral_face:
nvm then this q no longer remains doubt

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-OH is ortho para directing group then. One one ortho position ch3 is there and on the other ortho position steric hindrance will be there so only option is para… But in c option it is getting attached on meta position…how?!

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!

In the last line of the solution how did we get the expansion of ln term also is there any shortcut for this ques if we dont remember expansion

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This was in pg advanced illustration i guess u can refer that

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konsa?

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@Anorak https://youtu.be/hiuDMM8tckM

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thx dude

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An unknown metal of mass 192 g heated to a temperature
of 100°C was immersed into a brass calorimeter of mass
128 g containing 240 g of water at a temperature of 8.4°C.
Calculate the specific heat of the unknown metal if water
temperature stablizes at 21.5°C. (Specific heat of brass is
394 J kg–1 K–1) [10 Jan. 2019 II]
(a) 458 J kg–1 K–1 (b) 1232 J kg–1 K–1
(c) 916 J kg–1 K–1 (d) 654 J kg–1 K–1

Aisi calculations ko karna hi padega kya? Jaan nikal gayi meri iski calculations me…

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