Latest KVPY Aptitude Question SOLUTION: In the nuclear reaction Th 234 Pa X 91 234 90 → + . X is-

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Previous Question: Friedel-Crafts acylation is- (A) α-acylation of a carbonyl compound (B) acylation of phenols to generate esters (C) acylation of aliphatic olefins (D) acylation of aromatic nucleus Next Question: A concentrated solution of copper sulphate, which is dark blue in colour, a mixed at room temperature with a dilute solution of copper sulphate, which is light blue. For this process- (A) Entropy change is positive, but enthalpy change is negative (B) Entropy and enthalpy changes are both positive (C) Entropy change is positive and enthalpy does not change (D) Entropy change is negative and enthalpy change is positive

(#M40027272) KVPY question General Ability Test -2010 Keep an EYE

In the nuclear reaction Th 234 Pa X
91
234
90 → + . X is-: Asked In KVPY (11 years ago); Unsolved; Is this Puzzle helpful? (0) (0) Submit Your Solution

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Previous Question: Friedel-Crafts acylation is- (A) α-acylation of a carbonyl compound (B) acylation of phenols to generate esters (C) acylation of aliphatic olefins (D) acylation of aromatic nucleus Next Question: A concentrated solution of copper sulphate, which is dark blue in colour, a mixed at room temperature with a dilute solution of copper sulphate, which is light blue. For this process- (A) Entropy change is positive, but enthalpy change is negative (B) Entropy and enthalpy changes are both positive (C) Entropy change is positive and enthalpy does not change (D) Entropy change is negative and enthalpy change is positive

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