OTS (Open Testing Service) · Khuddam-ul-Hujjaj/ Nazims for Hajj (OTS 2027 - Includes All NTS Past Papers)
Guinness World Records (General Knowledge Focus) MCQs with Answers & Explanations (Page 127)
World Records & Superlatives
· General Knowledge
10,583 Questions• 7938 Mins Practice• Updated for 2026 Competitive Exams
10583 MCQs
Session Progress
0 / 0 Solved
Reveal answers to start tracking your session progress!
Showing 2521–2540 of 10583 MCQs
Page 127 / 530
Solved Questions
10583 Questions
2521
Halothane is a halo derivative of?
Correct Option
Option C
2522
The product of the concentrations of each ion in a saturated solution of a sparingly soluble salt at 298 K , raised to the power of their relative concentrations is?
Correct Option
Option B
2523
The catalyst used for the manufacture of H2SO4 by contact process is?
Correct Option
Option A
2524
Nylon-6-6 is called?
Correct Option
Option B
2525
The standard electrode potential of hydrogen is arbitrarily taken at 298 k is _____ .
Correct Option
Option D
2526
The potential difference of an electrochemical cell is measured by?
Correct Option
Option B
2527
The shape of [CO(NH₃)6]³⁺ complex is?
Correct Option
Option B
2528
0 mole of calcium will contained _____ g of calcium?
Correct Option
Option D
2529
Which of the following is the correct equation to calculate relative molecular mass of a gas.
Correct Option
Option C
2530
Which one of the following compounds act as catalyst when alcohols react with carboxylic acids?
Correct Option
Option C
2531
In Period 2 and Period 3 maximum melting point shown by elements:
Correct Option
Option D
2532
Which one of the following reagents is used to distinguish between aldehydes and ketones?
Correct Option
Option D
2533
Which of these pollutants is produced by burning of coal and causes acid rain.
Correct Option
Option B
2534
Which option shows all the molecules with bond angle 109.5?
Correct Option
Option C
2535
Butane molecule can have max. no of isomers?
Correct Option
Option A
2536
Select one which is alcohol?
Correct Option
Option C
2537
Which compound is obtained bn the elimination of bromopropane?
Correct Option
Option D
2538
Why is it necessary to distill aldehyde formed from oxidation of primary alcohol through acidified potassium dichromate(VI) solution or acidified sodium dichromate (V1) solution?
Correct Option
Option A
2539
Halogens arc being used as fire extinguisher, mild antiseptic, CFCs and many other organic chemicals. Which of the following halogen is used to kill the bacteria in drinking water?
Correct Option
Option A
2540
Which of the following act as electrophilic in the electrophilic substitution of benzene with bromine?
