This is Everyday Science MCQs section with detailed explanations for preparation of screening tests, interviews for government jobs. In this section candidate will learn MCQs on variety of topics from the subject.
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21
Coulomb is the scientific unit to measure:
Velocity
Temperature
Mass
None
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Added By: Admin Mcqsforum
Answer
: None
Explanation
:
A quantity of 1 C is equal to approximately 6.24 x 1018, or 6.24 quintillion. In terms of SI base units, the coulomb is the equivalent of one ampere-second. Conversely, an electric current of A represents 1 C of unit electric charge carriers flowing past a specific point in 1 s.
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22
Equator passes through one of these countries:
Saudi Arabia
Italy
Japan
None
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Added By: Admin Mcqsforum
Answer
: None
Explanation
:
There are 13 countries to be exact that lie along the equator. They are dispersed through South America, Africa and Asia and include, Ecuador, Colombia, Brazil, Gabon, Congo, Democratic Republic of Congo, Uganda, Kenya, Sao Tome and Principe, Somalia, Maldives, Indonesia and Kiribati.
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23
Anti Diuretic hormone is secreted by one of the following glands:
Pituitary
Pancreas
Thyroid
None
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Added By: Admin Mcqsforum
Answer
: Pituitary
Explanation
:
The posterior pituitary stores and secretes (but does not synthesize) the following important endocrine hormones: Magnocellular neurons: Antidiuretic hormone (ADH, also known as vasopressin and arginine vasopressin AVP), the majority of which is released from the supraoptic nucleus in the hypothalamus.
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24
UV light falls in the category of:
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25
The earth's _____ is divided into 15 major plates of various sizes:
Mesosphere
Stratosphere
Lithosphere
None
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Added By: Admin Mcqsforum
Answer
: Lithosphere
Explanation
:
The most well-known feature associated with Earth's lithosphere is tectonic activity. Tectonic activity describes the interaction of the huge slabs of lithosphere called tectonic plates. The lithosphere is divided into 15 major tectonic plates: the North American, Caribbean, South American, Scotia, Antarctic,Eurasian, Arabian, African, Indian, Philippine, Australian, Pacific, Juan de Fuca, Cocos, and Nazca.
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26
One of these scientists formulated basic laws of Geometry:
Pythagorus
Archimedes
Aristotle
None
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Added By: Admin Mcqsforum
Answer
: Archimedes
Explanation
:
Archimedes of Syracuse was a Greek mathematician, physicist, engineer, inventor, and astronomer. Although few details of his life are known, he is regarded as one of the leading scientists in classical antiquity.
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27
Phosphorus is an essential component of one of the following biological molecules:
Amino acids
Nucleic acids
Carbohydrates
None
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Added By: Admin Mcqsforum
Answer
: Nucleic acids
Explanation
:
Nucleic acids are biopolymers, or small biomolecules, essential to all known forms of life. They are composed of monomers, which are nucleotides made of three components: a 5-carbon sugar, a phosphate group and a nitrogenous base.
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28
He was the first scientist to prove that planets move around the sun:
Archimedes
Galileo Galilei
John Kepler
None
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Added By: Admin Mcqsforum
Answer
: Galileo Galilei
Explanation
:
Galileo Galilei was an Italian polymath. Galileo is a central figure in the transition from natural philosophy to modern science and in the transformation of the scientific Renaissance into a scientific revolution.
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29
Atom is made up of ____ different kinds of subatomic particles:
Three
Two
Four
None
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Added By: Admin Mcqsforum
Answer
: Three
Explanation
:
An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are very small; typical sizes are around 100 picometers (a ten-billionth of a meter, in the short scale)
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30
Uranium is best used as nuclear fuel in one of the following forms:
U 235
U 237
U 238
None
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Added By: Admin Mcqsforum
Answer
: U 235
Explanation
:
Uranium-235 is an isotope of uranium making up about 0.72% of natural uranium. Unlike the predominant isotope uranium-238, it is fissile, i.e., it can sustain a fission chain reaction