Guinness MCQs for Khuddam-ul-Hujjaj/ Nazims

1801

The carbon number of gasoline is:

A. C5 - C6 B. C6 - C7 C. C5 - C10 D. C12 - C15

1802

The oxidation number of Br- in Br2 is:

A. -2 B. -1 D. +1

1803

The number of moles of CO2 which contain 8.0 g of oxygen is:

A. 0.25 B. 0.50 C. 0.75 D. 1.0

1804

Hydrogen bonds are represented by:

A. dative bonds B. full bond C. partial charges D. dotted bonds

1805

Effusion of gases take place through a hole with:

A. Hole dimensions B. Infinite dimensions C. Slit like dimensions D. Molecular dimensions

1806

In t-butyl alcohol, the tertiary carbon is bonded to:

A. No H-atoms B. One H-atoms C. Three H-atoms D. Four C-atoms

1807

The standard reduction potential of hydrogen electrode is:

A. -0.76 volts B. 0.00 volts C. +1.5 volts D. 1.0 volts

1808

Down's cell is used to prepare:

A. Sodium carbonate B. Sodium bicarbonate C. Sodium hydroxide D. Sodium metal

1809

Quantum number values for 2p orbitals are:

A. n=2 l=1 B. n=2 l=2 C. n=2 l=0 D. n=1 l=0

1810

Solubility product of AgCl is 2.0x10^-10 mol^-4 dm^-6. Maximum concentration of Ag^+ ions in the solution is:

A. 2.0×10^-12 mol dm^-3 B. 1.4×10^-12 mol dm^-3 C. 1.0×10^-12 mol dm^-3 D. 2.5×10^-10 mol dm^-3

1811

A limiting reactant is the one, which:

A. is taken in lesser quantity in grams as compared to the other reactant B. Is taken in lesser quantity in volume as compared to the other reactant C. gives the minimum amount of the product which is required D. gives equal amount of the reactants and products

1812

The chemical formula of Tincal is:

A. Na_2B_4O_7·10H_2O B. Na_2B_4O_7·10H_2O C. Na_2B_4O_7·H_2O D. Na_2B_4O_5·10H_2O

1813

An object is falling down with a speed of 20 m/s. After 3 seconds its velocity will be ______ m/s (g=10 m/s^2).

A. 05 B. 50 C. 55 D. 95

1814

In Young's double slit experiment, if d is separation between two slits, λ is wavelength of light and θ is angle of line from center of slits to the point of observation on the screen; then for maxima (bright fringe); the formula is:

A. 2dsinθ = mλ; m = 0, 1, 2, B. dsinθ = mλ; m = 0, 1, 2, C. dsinθ = (m+1/2)λ; m = 0, 1, 2, D. 2msinθ=dλ; m = 0, 1, 2,

1815

A paratrooper is falling down with uniform velocity and also rotating with a constant angular velocity of 0.2 rad/sec. The body satisfies ______.

A. First condition of equilibrium but not second B. Second condition of equilibrium but not first C. First and second condition of equilibrium D. Neither First nor the second condition of equilibrium

1816

If 92U235 decays by emitting two a,one B and two gamma rays the new daughter element y is = ______.

A. 88y²²⁷ B. 89y²²⁷ C. 90y²²⁷ D. 89y²³¹

1817

A changing current in a coil sets up a changing magnetic field around it which in turn induces an e.m.f. in it. This effect is known as ______.

A. Simple induction B. Mutual induction C. Self-Induction D. EMF induction

1818

The principle of an AC generator is ______.

A. Lenz's law B. Faraday's law C. Self-Induction D. Ampere's law

1819

A material that does NOT become radioactive after absorbing neutrons is called ______.

A. Shielding B. Reactor fuel C. Coolant D. Control material

1820

What should the distance of an object from a convex lens of focal length f=10 cm in order to produce an erect image twice as large as the object?

A. 20 cm from the lens B. 15 cm from the lens C. 10 cm from the lens D. 05 cm from the lens

Guinness World Records (General Knowledge Focus) MCQs with Answers & Explanations (Page 91)

Solved Questions

Browse categories

Mock Test

Subject Directory

Popular Categories

Topic Info

Study Progress

Navigation