Sail E0 Webinar

General Knowledge > General Science

CHEMISTRY MCQs

Total Questions : 2589 | Page 58 of 259 pages
Question 571. Ionisation energy of nitrogen is greater than that of oxygen because nitrogen has
  1.    High bond dissociation energy
  2.    Smaller atomic radius
  3.    Stable half filled 2p sub level
  4.    High nuclear charge
 Discuss Question
Answer: Option C. -> Stable half filled 2p sub level
Question 572. The elements with atomic numbers 9, 17, 35, 53, 85 are all
  1.    Heavy metals
  2.    Noble gases
  3.    Light metals
  4.    Halogens
 Discuss Question
Answer: Option D. -> Halogens
Question 573. Which one is the most reactive halogen?
  1.    Iodine
  2.    Bromine
  3.    Fluorine
  4.    Chlorine
 Discuss Question
Answer: Option C. -> Fluorine
Question 574. Who first published the periodic table?
  1.    John Dalton
  2.    Julius Lothar Meyer
  3.    Henry Moseley
  4.    Dmitri Mendeleev
 Discuss Question
Answer: Option D. -> Dmitri Mendeleev
Question 575. The most suitable vessel for storing concentrated sulphuric acid is
  1.    Copper vessel
  2.    Aluminium vessel
  3.    Glass vessel
  4.    Earthen vessel
 Discuss Question
Answer: Option C. -> Glass vessel
Question 576. Which one of the following nonmetals shows allotropy in the liquid state?
  1.    Carbon
  2.    Sulphur
  3.    Phosphorous
  4.    Bromine
 Discuss Question
Answer: Option B. -> Sulphur
Question 577. Sulphuric acid is
  1.    Monobasic
  2.    Dibasic
  3.    Tribasic
  4.    Tetrabasic
 Discuss Question
Answer: Option B. -> Dibasic
Question 578. When conc. H2SO4 is added to dry KNO3, brown fumes are evolved. These fumes are due to
  1.    SO3
  2.    SO2
  3.    NO2
  4.    N2O
 Discuss Question
Answer: Option C. -> NO2
Question 579. Wax used for making candle is chemically a mixture of
  1.    Aliphatic hydrocarbons
  2.    Aromatic hydrocarbons
  3.    Cyclic hydrocarbons
  4.    Aliphatic and aromatic hydrocarbons
 Discuss Question
Answer: Option A. -> Aliphatic hydrocarbons
Question 580. Benzene cannot undergo :
  1.    Substitution
  2.    Addition
  3.    Elimination
  4.    Oxidation
 Discuss Question
Answer: Option C. -> Elimination

Latest Videos
Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)
Direction Sense Test Part 1 Reasoning (Hindi)
Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE
Cube & Cuboid Part 1 Reasoning (Hindi)
Data Interpretation (DI) Basic Concept Reasoning (Hindi)
Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)
Sail E0 free webinar Webinars
Real Numbers Part 7 Class 10 Maths
Real Numbers Part 1 Class 10 Maths
Polynomials Part 1 Class 10 Maths

Latest Test Papers

Pie Chart - Test Paper 1 Data Interpretation Reasoning & DI
Tabulation - Test Paper 2 Data Interpretation Reasoning & DI
Test Paper 1 Direction Sense Test Reasoning & DI
ICA , RDIC,GFM Free Modal Test Paper - Non - Technical Branch Old Syllabus 2022 - SAIL Junior Officer E0
GFM Combined 1 Free Revision Test SAIL JO E-0