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 131)
World Records & Superlatives
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10,583 Questions• 7938 Mins Practice• Updated for 2026 Competitive Exams
10583 MCQs
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10583 Questions
2601
The process in which a complementary copy of the code from a gene is produced by RNA Polymerase in the nucleus:
Correct Option
Option A
2602
Among followings which cellular organelle contains circular DNA similar to those found in bacteria?
Correct Option
Option C
2603
Large lymph vessels ultimately form larger lymph duct, which drains its lymph into:
Correct Option
Option D
2604
Which is an example of a Disaccharide:
Correct Option
Option B
2605
In glycine R is ______.
Correct Option
Option C
2606
As a result of replication, parental DNA would become completely dispersed and that each strand of all the daughter molecules would be a mixture of old and new DNA. This is called as:
Correct Option
Option B
2607
Smooth endoplasmic reticulum is responsible for the metabolism of:
Correct Option
Option D
2608
Which one the following compound is additional polymer?
Correct Option
Option A
2609
The pH of 10⁻² M aqueous solution of sodium hydroxide is:
Correct Option
Option B
2610
Ketones can be made by oxidation of:
Correct Option
Option C
2611
Which of the following molecule shows cis-trans isomers?
Correct Option
Option B
2612
Disposable cups are made of a polymer polystyrene. Polystyrene is:
Correct Option
Option C
2613
Which of the following element is not present in halogens?
Correct Option
Option C
2614
Carboxylic acids can be reduced into corresponding alcohols. Which of the following reagent can be used for this purpose?
Correct Option
Option B
2615
The Ka values of HCl, CH₃COOH, HF and H₂SO₄ are 10⁺7, 1.85 x 10⁻⁵, 6.7 x 10⁻⁵ and 10⁺2 respectively. The decreasing order of acidic strength is:
Correct Option
Option B
2616
In contact process, to which substance adequate quantities of water is added to convert it to sulphuric acid?
Correct Option
Option A
2617
Which one of the following molecules has SP³ hybridization?
Correct Option
Option A
2618
Nitriles (RCN) on hydrolysis in the presence of a mineral acid yield:
Correct Option
Option B
2619
Alkenes undergo:
Correct Option
Option A
2620
How many moles of calcium carbonate are present in 1.75 kg of calcium carbonate? (Ar of Ca = 40, Ar of C = 12, Ar of O = 16)
