Chemistry, tutorial, homework help, grade11, grade 12, B Sc first, Second, third year
Due to risk of covid-19, 'GRADE INCREAMENT EXAMINATION' has been shorten to 1.30 hrs. Model questions for this examination is given below.
Full mark is reduced to 30
Time is reduced to 1:30 hr
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Alpha particle: Alpha particle is helium nucleus having 2 unit positive charge and 4 unit mass. Radioactive substances emit alpha particles...