Sail E0 Webinar

MCQs

Total Questions : 95 | Page 4 of 10 pages
Question 31. I n the proton decoupled 13C NMR spectrum of 7-norbornanone, the number of signals obtained is
  1.    7
  2.    3
  3.    4
  4.    5
 Discuss Question
Answer: Option B. -> 3


-NA-


Question 32. If Δy and Δpy are the uncertainties in the y-coordinate and the y component of the momentum of a particle respectively, then, according to uncertainty principle ΔyΔpy is (ћ = h/2π and h is Planck's constant)
  1.    â‰¥ Ñ›
  2.    > Ñ›/2
  3.    > Ñ›
  4.    â‰¥ Ñ›/2
 Discuss Question
Answer: Option D. -> ≥ ћ/2


-NA-


Question 33. The average length of a typical α-helix comprised of 10 amino acids is
  1.    10 Ã…
  2.    15 Ã…
  3.    36 Ã…
  4.    54 Ã…
 Discuss Question
Answer: Option B. -> 15 Ã…


-NA-


Question 34. The plot of χT versus T ((where χ is molar magnetic susceptibility and T is the temperature) for a paramagnetic complex which strictly follows Curie equation is
  1.    .
  2.    .
  3.    .
  4.    .
 Discuss Question
Answer: Option C. -> .


-NA-


Question 35. The number of terminal carbonyl groups present in Fe2(CO)9 is
  1.    2
  2.    5
  3.    6
  4.    3
 Discuss Question
Answer: Option C. -> 6


-NA-


Question 36. Among the following substituted silanes, the one that gives cross-linked silicone polymer upon
hydrolysis is
  1.    (CH3)4Si
  2.    CH3SiCl3
  3.    (CH3)2SiCl2
  4.    (CH3)3SiCl
 Discuss Question
Answer: Option B. -> CH3SiCl3


-NA-


Question 37. The enthalpies of hydration of Ca2+, Mn2+ and Zn2+ follow the order
  1.    Mn2+ > Ca2+ > Zn2+
  2.    Zn2+ > Ca2+ > Mn2+
  3.    Mn2+ > Zn2+ > Ca2+
  4.    Zn2+ > Mn2+ > Ca2+
 Discuss Question
Answer: Option D. -> Zn2+ > Mn2+ > Ca2+


-NA-


Question 38. A mong the following donors, the one that forms most stable adduct with the Lewis acid B(CH3)3 is
  1.    4-methylpyridine
  2.    2,6-dimethylpyridine
  3.    4-nitropyridine
  4.    2,6-di-tert-butylpyridine
 Discuss Question
Answer: Option A. -> 4-methylpyridine


-NA-


Question 39. T he complex with inverse-spinel structure is
  1.    Co3O4
  2.    Fe3O4
  3.    MgAlO4
  4.    Mn3O4
 Discuss Question
Answer: Option B. -> Fe3O4


-NA-


Question 40. T he IUPAC nomenclature of Na[PCl6] is
  1.    sodium hexachlorophosphine(V)
  2.    sodium hexachlorophosphate(V)
  3.    sodium hexachlorophosphine
  4.    sodium hexachlorophosphite(V)
 Discuss Question
Answer: Option B. -> sodium hexachlorophosphate(V)


-NA-


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