Pakexammcq, Author at Pak Exam MCQs

What is the origin of the word Education?

A. ‘E’ and ‘Catum’
B. ‘Edi’ and ‘Catum’
C. Word ‘Educate’
D. None of these

Answer & Solution

Option: A
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A micro organism which is capable of producing a disease condition is called

Pakexammcq Everyday Science & General Science 0

A. Pure
B. Aerobic
C. Pathogenic
D. Auto-tropic

Answer & Solution

Option: C
Explanation :These microorganisms may cause kinds of communicable diseases by competing metabolic resources, destroying cells or tissues, or secreting toxins. Pathogenic microorganism may be viruses, bacteria, mycobacteria, fungi, protozoa and so on and infects people or animals in direct or indirect ways.

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Rainbow is formed

Pakexammcq Everyday Science & General Science 0

A. A little afternoons
B. In early mornings
C. In the late afternoons
D. Both b & c

Answer & Solution

Option: D
Explanation :Because rainbows are created by light via raindrops, the best time to catch a rainbow is when it’s sunny and raining. “There is an even better chance when the sun is at a lower angle, so early or later in the day.

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Moon surface gravity is

Pakexammcq Everyday Science & General Science 0

A. One-Eighth that of earth
B. One-Tenth that of earth
C. One-Sixth that of earth
D. One-Fourth that of earth

Answer & Solution

Option: C
Explanation :The Moon, also known as Luna, is an astronomical body that orbits planet Earth and is Earth’s only permanent natural satellite. The acceleration due to gravity on the surface of the Moon is about 1.625 m/s2, about 16.6% that on Earth’s surface or 0.166 ɡ.

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Which have four chambered heart

Pakexammcq Everyday Science & General Science 0

A. Fish and Mammals
B. Amphibians and Birds
C. Amphibians and Reptiles
D. Birds and Mammals

Answer & Solution

Option: D
Explanation :Aves (Eg. Birds)- Four chambered (2 atria and 2 ventricles). Mammalia (Eg. Monkey, Tigers, Human) Four chambered (2 atria and 2 ventricles).
Pisces (eg. Fishes) Two chambered (1 atrium and 1 ventricle).
Amphibia (eg. Frogs)- Three chambered (1 ventricle and 2 atria).
Reptilia (eg. Snakes, Lizards, Crocodiles) – Usually all reptiles have three chambers But crocodile alone sometimes have four-chambered heart due to their adaptation for their environment.

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Dry air is

Pakexammcq Everyday Science & General Science 0

A. Good conductor
B. Bad conductor
C. good insulator
D. Bad insulator

Answer & Solution

Option: B
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Which one is man made element

Pakexammcq Everyday Science & General Science 0

A. Plutonium
B. U-235
C. Thorium
D. Radium

Answer & Solution

Option: A
Explanation :a synthetic element is a chemical element that does not occur naturally on Earth, and can only be created artificially. So far, 24 synthetic elements have been created (those with atomic numbers 95–118).
Seven other elements were first created artificially and thus considered synthetic, but later discovered to exist naturally as well; among them plutonium—first synthesized in 1940

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Which one is called laughing gas?

Pakexammcq Chemistry 0

A. Ferrous chloride (FeCl2)
B. Sulphur dioxide (SO2)
C. Nitrous oxide (N2O)
D. Ferric hydrogen Fe(OH)3

Answer & Solution

Option: C
Explanation :Nitrous oxide (N2O), also called dinitrogen monoxide, laughing gas, or nitrous, one of several oxides of nitrogen, a colourless gas with pleasant, sweetish odour and taste, which when inhaled produces insensibility to pain preceded by mild hysteria, sometimes laughter.Nitrous oxide was discovered by the English chemist Joseph Priestley in 1772; another English chemist, Humphry Davy, later named it and showed its physiological effect.

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Mixing of which material makes rubber more flexible?

Pakexammcq Chemistry 0

A. Graphite
B. Marble powder
C. Sulphur (S)
D. Potassium permanganate (KMNO4)

Answer & Solution

Option: C
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Mixture of two metals is called

Pakexammcq Chemistry 0

A. Alloy
B. Dispersion
C. Fission
D. Diffusion

Answer & Solution

Option: A
Explanation :Metallic bonds can occur between different elements. A mixture of two or more metals is called an alloy. Depending on the size of the atoms being mixed, there are two different kinds of alloys that can form: 1. Substitutional alloy 2. Interstitial alloy

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