5
Q:

# Which of the following is not an intensive property?

 A) Weight B) Density C) Refractive index D) Melting point

Explanation:

An intensive property is a physical quantity whose value does not depend on the amount of the substance for which it is measured. For example, the temperature of a system in thermal equilibrium is the same as the temperature of any part of it. If the system is divided the temperature of each subsystem is identical. The same applies to the density of a homogeneous system, if the system is divided in half, the mass and the volume change in the identical ratio and the density remains unchanged. Additionally, the boiling point of a substance is another example of an intensive property. For example, the boiling point for water is 100 °C at a pressure of one atmosphere, a fact which remains true regardless of quantity.

Subject: General Science
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Q:

The term metabolism is best defined as

 A) the number of calories it takes to keep from shivering on a cold day B) biochemical reactions involved in building cell molecules or breaking down molecules for energy C) the length of time it takes to digest and absorb fats D) a measure of carbohydrate utilization, typically involving measurement of calories

Answer & Explanation Answer: B) biochemical reactions involved in building cell molecules or breaking down molecules for energy

Explanation:

Metabolism (from Greek: μεταβολή metabolē, "change") is the set of life-sustaining chemical transformations within the cells of organisms. The three main purposes of metabolism are the conversion of food/fuel to energy to run cellular processes, the conversion of food/fuel to building blocks for proteins, lipids, nucleic acids, and some carbohydrates, and the elimination of nitrogenous wastes.

In brief, the chemical processes that occur within a living organism in order to maintain life is called metabolism.

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1 22
Q:

Cobalt 60 is used for cancer treatment it emmits which rays?

 A) Alpha B) Beta C) Gamma D) X rays

Explanation:

Cobalt therapy or cobalt-60 therapy is the medical use of gamma rays from the radioisotope cobalt-60 to treat conditions such as cancer.

Cobalt 60 is a synthetic radioactive isotope of cobalt with a half-life of 5.2714 years. It is produced artificially in nuclear reactors.

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1 45
Q:

Water is a compound because it?

 A) it contains two different elements joined by chemical bond B) it contains hydrogen & oxygen C) it exists as solid, liquid or gas D) it cannot be split up into simpler substances by chemicals means

Answer & Explanation Answer: A) it contains two different elements joined by chemical bond

Explanation:

We know that All compounds are molecules, but not all molecules are compounds.

Water is a molecule because it is made from atoms that have been chemically combined. It is also a compound because the atoms that make water are not all the same - some are oxygen and some are hydrogen.

Hence, Water is a molecule and a compound.

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0 31
Q:

The term hierarchy refers to

 A) a team in which everyone is equal and has to pull his or her own weight B) a power structure in which each member knows his or her own place C) a situation in which higher species such as men will always be in control of lower species such as animals D) a condition in which the weak must die so the strong can survive

Answer & Explanation Answer: B) a power structure in which each member knows his or her own place

Explanation:

Hierarchy is a system of ranking in which members of a particular society are ranked in an ascending order depending on various factors.

Hence, the term hierarchy refers to a power structure in which each member knows his or her own place.

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0 41
Q:

What about Earth allows it to maintain bodies of water?

 A) mountains B) tides C) moderate tempatures D) comet crashes

Explanation:

The moderate temperatures allow Earth to maintain bodies of water into its normal state.

Changes in the bodies of water in terms of volume and structure would change due to the change in temperature.

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0 96
Q:

Iodine test is used to detect

 A) Carbohydrate B) Fat C) Protein D) Cholesterol

Explanation:

The iodine test is used to test for the presence of starch i.e, Carbohydrate.

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1 82
Q:

Which gymnospermic plant cures rheumatism?

 A) Ephedra B) Pinus C) Araucaria D) Gnetum

Explanation:

Oil from Gnetum spp a gymnosperm belonging to the family Gnetaceae is used to relieve the effects of rheumatism

The lianas and shrubs of Gnetum are found in the rain forests of the western ghats.

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1 152
Q:

Which of the following is not a sedimentary structure?

 A) graded bedding B) rock color C) ripple marks D) mudcracks