set 1 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 3 EXERCISES
The following question based on atomic structure molecules and nuclear chemistry topic of general science mcq
(a) anion
(b) cation
(c) molecule
(d) salt
The correct answers to the above question in:
Answer: (a)
e.g., Cl + e- ⟶ Cl- (anion)
Discuss Form
Read more chemistry basic Based General Science Questions and Answers
Question : 1
Which of the following statements is incorrect for cathode rays?
a) Their nature depends upon the nature of gas present in the discharge tube.
b) They cost shadow of solid objects placed in their path
c) They move in straight line
d) They get deflected towards positive charge.
Answer »Answer: (a)
Question : 2
An atom of carbon has 6 protons. Its mass number is 12. How many neutrons are present in an atom of carbon?
a) 10
b) 6
c) 12
d) 14
Answer »Answer: (b)
Question : 3
The isotopes of an element have
a) same atomic number
b) same mass number
c) same number of neutrons
d) None of these
Answer »Answer: (a)
Isotopes have a same atomic number but a different mass numbers.
e.g., 17Cl35 and 17Cl36 .
Question : 4
Which of the following have equal number of neutrons and protons?
a) Deuterium
b) Fluorine
c) Hydrogen
d) Chlorine
Answer »Answer: (a)
In 1H2 – no. of p = 1 and no. of n = 2 – 1 = 1
Question : 5
The number of molecules in one mole of a gas is
a) 6.023 × 1021
b) 6.023 × 1022
c) 6.023 × 1023
d) 6.023 × 1020
Answer »Answer: (c)
Question : 6
Which of the following pairs is/are correctly matched?
- Isotopes : Atoms with same atomic number but different atomic mass
- Isobars : Atoms with same number of neutrons but different atomic number
- Isotones : Atoms with same mass number but different atomic number
a) 1 and 2 only
b) 1 only
c) 1, 2 and 3
d) 2 only
Answer »Answer: (b)
Verbal Reasoning
Question & Answer Quiz
Non Verbal Reasoning
Question & Answer Quiz
Quantitative Aptitude
Question & Answer Quiz
Computer MCQ
Question & Answer Quiz
General English
Question & Answer Quiz
History GK
Question & Answer Quiz
Polity GK
Question & Answer Quiz
Geography GK
Question & Answer Quiz
Economy GK
Question & Answer Quiz
General Awareness GK
Question & Answer Quiz
Recently Added Subject & Categories For All Competitive Exams
Series Completion Questions & Answers PDF IBPS Clerk 2024
Top Alphabet Number Series Completion based Verbal Reasoning Multiple choice questions with answers PDF, & Free IBPS Mock tests For IBPS Clerk Prelims 2024
Continue Reading »
New 150+ Percentage Questions For IBPS Clerk Prelims 2024
Free Top Percentage Quants Aptitude based Multiple Choice Questions and Answers Practice Test Series, Quiz PDF & Mock Test for IBPS Clerk Prelims 2024 Exam
Continue Reading »
Classification Reasoning MCQ For IBPS Clerk Prelims 2024
Most Important 100+ Classification based Verbal Reasoning Ability Multiple choice questions and answers PDF, Free New Mock tests For IBPS Clerk Prelims 2024
Continue Reading »
Ratio and Proportion Questions with Solutions, IBPS Clerk
New Ratio and Proportion Quants Aptitude based Multiple Choice Questions and Answers Practice Test Series, Quiz & Mock Test for IBPS Clerk Prelims 2024 Exam
Continue Reading »