Guinness MCQs for Khuddam-ul-Hujjaj/ Nazims

Guinness World Records (General Knowledge Focus) MCQs with Answers & Explanations (Page 90)

Practice verified Guinness World Records (General Knowledge Focus) MCQs with Answers & Explanations for Khuddam-ul-Hujjaj/ Nazims for Hajj (OTS 2027 - Includes All NTS Past Papers) preparation. Featuring solved questions, detailed explanations, and past paper answers (Page 90).

World Records & Superlatives · General Knowledge

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Solved Questions

10583 Questions

1781

The nature of positive rays depends on:

A. The nature of the electrode B. The nature of the discharge tube C. The nature of the residual gas D. The shape of the electrodes

1782

The volume occupied by 1.4 g N₂ at STP is:

A. 22.4 dm³ B. 1.12 dm³ C. 11.2 dm³ D. 1.4 dm³

1783

Molarity of pure water is:

A. 01 B. 18 C. 36 D. 55.5

1784

The value of R (the gas constant) is:

A. 0.0821dm³ atm k mole-¹ B. 803143 Nm k-¹ mole C. 0.0821 dm³ atm k-¹ mole-¹ D. 8.3143 dm³ atm k-¹ mole-¹

1785

Tritium, an isotope of hydrogen contains:

A. Equal number of electrons and neutrons B. Equal number of electrons, protons and neutrons C. Number of neutrons are double than the number of protons D. Number of neutrons are half than the number of protons

1786

The chemical name of [Zn(OH)4]·² is:

A. Tetrahydroxy zinc (II) B. Tetrahydroxo zincate (IV) C. Pentahydroxy zincate (II) D. Tetrahydroxo zincate (II)

1787

When 5d orbital is complete, the entering electron will go to:

A. 6s B. 6p C. 5p D. 4f

1788

What are the products of the below mentioned equation?

A. 2H₂O + NOCl + Cl₂ B. H₂ + NOCl + 2HOCI C. H₂O + NO₂Cl + 2HCl D. 2H₂O + NOCl + 2Cl

1789

One Calorie is equivalent to:

A. 0.4184 J B. 41.84 J C. 4.184 J D. 418.4 J

1790

Paramagnetic elements contain:

A. All paired electrons B. All unpaired electrons C. Few unpaired electrons D. Unequal electrons and protons

1791

The mass of an electron is:

A. 0.000550 amu B. 1.008 amu C. 1.009 amu D. 0.5500 amu

1792

The number of bonds in nitrogen molecules are:

A. One σ and one π B. One σ and two π C. Three σ only D. Two σ and one π

1793

The electrophile in aromatic sulphonation is:

A. H2SO4 B. HSO4 C. SO3H+ D. SO3

1794

Choose the correct IUPAC name for the following complex. [Cr(NH3)4Cl2]Cl

A. Trichlorotetra amine chromium (III) B. Dichlorotetra amine chromium (III) chloride C. Dichlorotetra ammonia chromium (III) chloride D. Dichlorotetra amine chromate (III) chloride

1795

The pH of 10-3 mol dm-3 0f an aqueous solution of H2SO4 is:

A. 3.0 B. 2.7 C. 2.0 D. 1.5

1796

The oxidation state of Cl in HClO4 is:

A. +1 B. +5 C. +7 D. -7

1797

Which one of the following is NOT a nucleophile?

A. CN- B. NH3 C. H2S D. BF3

1798

Which of the following molecules have zero dipole moments?

A. NH3 B. CHCl3 C. H2O D. BF3

1799

Which of the following will have maximum value of heat of hydration?

A. Nat B. Cst C. Mg+² D. Ca+²

1800

Determine the significant figures in 0.0085:

A. 1 B. 2 C. 3 D. 4

Guinness World Records (General Knowledge Focus) MCQs with Answers & Explanations (Page 90)

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