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  4. Which of the following are fission reactions? I. 01 n+ 92235 U arrow 92236 U arrow 56144 Ba + 3689 Kr +3 01 n II. 01 n+ 92235 U arrow 92236 U arrow 51133 Sb + 4199 Nb +401 n III. 01 n+ 92235 U arrow 541.40 Xe + 3894 S r+2 01 n IV. 12 H + 12 H arrow 23 He +n

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Q. Which of the following are fission reactions?
I. ${ }_{0}^{1} n+{ }_{92}^{235} U \rightarrow{ }_{92}^{236} U \rightarrow{ }_{56}^{144} Ba +{ }_{36}^{89} Kr +3{ }_{0}^{1} n$
II. ${ }_{0}^{1} n+{ }_{92}^{235} U \rightarrow{ }_{92}^{236} U \rightarrow{ }_{51}^{133} Sb +{ }_{41}^{99} Nb +4_{0}^{1} n$
III. ${ }_{0}^{1} n+{ }_{92}^{235} U \rightarrow{ }_{54}^{1.40} Xe +{ }_{38}^{94} S r+2{ }_{0}^{1} n$
IV. ${ }_{1}^{2} H +{ }_{1}^{2} H \rightarrow{ }_{2}^{3} He +n$

Nuclei

Solution:

Correct answer is (d) I, II and III