MCQs
Read every question, see the correct answer, and understand the explanation at your own pace. Study mode has no timer and no negative marking.
Correct answer
C. Ar, 4s2
Explanation
Ar, 4s2 is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. micronutrients
Explanation
micronutrients is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. a hydroxy group makes the benzene ring more susceptible to electrophilic attack
Explanation
a hydroxy group makes the benzene ring more susceptible to electrophilic attack is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Reaction is exothermic
Explanation
Reaction is exothermic is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. both B & C
Explanation
both B & C is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. p-electrons in CI(Z = 17)
Explanation
p-electrons in CI(Z = 17) is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. Beta radiations
Explanation
The beta particle, which may be either negatively charged (negatrons) or positively charged (positrons), originates from the nucleus of an atom. A beta particle is emitted from the nucleus of an atom during radioactive decay. The electron, however, occupies regions outside the nucleus of an atom.
Correct answer
D. Be+³
Explanation
Be+³ is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. Calcium
Explanation
Calcium is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. Increases the rate of forward as well as backward reaction equally
Explanation
Increases the rate of forward as well as backward reaction equally is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.