set 3 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 4 EXERCISES
The following question based on classification of elements, chemical bonding, periodicity in properties & physical transformation topic of general science mcq
N2 + 3H2 = 2NH3
How many hydrogen molecules are required to react with 100 molecules of nitrogen?
(a) 200
(b) 300
(c) 100
(d) 400
The correct answers to the above question in:
Answer: (b)
Practice classification of elements, chemical bonding, periodicity in properties & physical transformation (set 3) Online Quiz
Discuss Form
Read more chemistry Based General Science Questions and Answers
Question : 1
The metal which is hard and has high m.p. and used in electric bulbs is
a) Pt
b) Fe
c) Ni
d) W
Answer »Answer: (d)
Tungsten (W) is used in electric bulbs.
Question : 2
Match List-I with List-II:
List-I | List-II |
A. $C + O_2 ⟶ CO_2$ | 1. Displacement |
B. $2AgBr ⟶ ↖ {Light} 2Ag+Br_2$ | 2. Combination |
C. Zn + $CuSO_4 ⟶ ZnSO_4 + Cu$ | 3. Decomposition |
D. $2Ca + O_2 ⟶ 2CaO$ | 4. Oxidation |
E. $BaCl_2 + H_2SO_4 ⟶ BaSO_4 + 2HCl$ | 5. Double displacement reaction |
a) A – (2), B – (3), C – (4), D – (1), E – (5)
b) A – (3), B – (2), C – (1), D – (4), E – (5)
c) A – (2), B – (3), C – (1), D – (4), E – (5)
d) A – (2), B – (3), C – (1), D – (5), E – (4)
Answer »Answer: (c)
Question : 3
All the members in a group in long form of periodic table have the same
a) number of valence electrons
b) chemical properties
c) valence
d) All of these
Answer »Answer: (d)
Because of the presence of same number of valence electrons the elements of same group have similar chemical properties.
Question : 4
Which type of colloidal system is expressed in the fog?
a) Gas in a liquid
b) Solid in a gas
c) Liquid in a gas
d) Liquid in liquid
Answer »Answer: (c)
Question : 5
Which of the following are correct statements?
- The canonical structures have no real existence
- Every $AB_5$ molecule does in fact have square pyramidal structure
- Multiple bonds are always shorter than corresponding single bonds
- The electron-deficient molecules can act as Lewis acids
a) 2, 3 and 4
b) 1, 2 and 3
c) 1, 3 and 4
d) 1, 2 and 4
Answer »Answer: (c)
Question : 6
Which of the following elements does not lose an electron easily?
a) F
b) Mg
c) Na
d) Al
Answer »Answer: (a)
F has a tendency to gain an electron.
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
100+ Quadratic Equation Questions Answers PDF for Bank
Quadratic Equation multiple choice questions with detailed answers for IBPS RRB SO. more than 250 Attitude practice test exercises for all competitive exams
Continue Reading »
IBPS Aptitude Linear Equations MCQ Questions Answers PDF
Linear equations multiple choice questions with detailed answers for IBPS RRB SO. more than 250 Attitude practice test exercises for all competitive exams
Continue Reading »
New 100+ Compound Interest MCQ with Answers PDF for IBPS
Compound Interest verbal ability questions and answers solutions with PDF for IBPS RRB PO. Aptitude Objective MCQ Practice Exercises all competitive exams
Continue Reading »
100+ Mixture and Alligation MCQ Questions PDF for IBPS
Most importantly Mixture and Alligation multiple choice questions and answers with PDF for IBPS RRB PO. Aptitude MCQ Practice Exercises all Bank Exams
Continue Reading »