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Biology
Physics
Chemistry
100
It is the most common element in the human body... A: Carbon, B: Hydrogen, C: Oxygen, D: Calcium
What is C. Oxygen. It makes up almost 63% of the average human. Following, are major elements and the percentages of the human body that they represent: Oxygen- 62.81% Carbon- 19.37% Hydrogen- 9.31% Nitrogen- 5.14% Sulfur- 0.64% Phosphorus- 0.63% Other- 2.10%
100

The energy by virtue of its position is known as:  [A] Kinetic energy
[B] Potential energy
[C] Internal energy
[D] Heat energy  

What is B: [Potential energy]
The energy by virtue of its position is known as Potential energy. The energy by virtue of its motion is known as Kinetic energy.

100
This type of matter has a definite volume but no definite shape... A: Solids, B: Liquids, C: Gases, D: Plasma
What is B: Liquids. Liquids have a definite volume but no definite shape. Because the intermolecular forces are weak in a liquid, it is able to change its shape to conform to its container.
200
This living animal has the heaviest brain... A: African Bush Elephant, B: Black Rhinoceros, C: Sperm Whale, D: Human
What is C. Sperm Whales. They have the heaviest brain of any living animal. The average Sperm Whale's brain weighs more than 20 pounds (9 kilograms) which is about 4 times heavier than the average human brain.
200

What happens to a body when its density is greater than the density of the fluid?

[A] it floats
[B] it sinks
[C] it stays at rest
[D] None of the above


What is B.
The body sinks in the fluid in case its density is greater than the density of the fluid. For example, an iron nail has greater density than water, therefore it sinks in water.

200
This English chemist and physicist discovered hydrogen. A: Sir William Crookes, B: Henry Cavendish, C: Dorothy Hodgkin, D: Bernard Shaw
Who is B: Henry Cavendish. This English chemist and physicist not only discovered hydrogen, but also determined the mass of the Earth.
300
Of the following, it has the longest recorded life span. A: Termite, B: Chimpanzee, C: Indian Elephant, D: Freshwater Oyster
What is the Freshwater Oyster (80 years.) The longest recorded life span for a termite is 50 years; for a chimapanzee, 50 years; and for an Indian elephant, 70 years.
300

In which of the following mediums can sound waves travel?

[A] Solids
[B] Liquids
[C] Gases
[D] All of them


What is D. All of them


Sound waves are longitudinal mechanical waves that can travel through solids, liquids, or gases.

 

300
Matter that does not enter chemical reactions is described as this... A: Inhibited, B: Inert, C: Grounded, D: Radioactive
What is B: Inert. Inert matter does not enter chemical reactions.
400
This was the first genetically engineered organism. A: Corn, B: Tobacco, C: Sheep, D: Rat
What is a B. tobacco plant. In 1983, a tobacco plant, designed to be resistant to certain herbicides, was grown in Wisconsin.
400

Which of the following is another unit of frequency?

[A] decibel
[B] cycle per second
[C] metre per second
[D] second


What is B cycle per second

The change in density from the maximum value to the minimum value, again to the maximum value, makes one complete oscillation. The number of oscillations per unit time is the frequency of the sound wave.

400
These substances control the rates of chemical reactions... A: Reactants, B: Catalysts, C: Isotopes, D: Cathodes
What is B: Catalysts. Catalysts are substances that control the rates of chemical reactions.
500
This animal has the highest blood pressure... A: Giraffe, B: Blue Whale, C: Elephant, D: Flea
What is A: Giraffe. Because of its extremely long neck, the giraffe must rely on its oversized heart (two feet long and twenty-five pounds!) to pump blood all the way to its head. As a result, the giraffe has the highest blood pressure of any animal: 280/180 mmHg (millimeters of mercury) at heart level when prone -- more than twice the blood pressure of an average human. Not surprisingly, because of their high blood pressure, giraffes are prone to heart attacks.
500

Which of the following principles is used to define the First law of Thermodynamics?

[A] Conservation of mass
[B] Conservation of energy
[C] Conservation of momentum
[D] Conservation of charge


What is B Conservation of energy


The first law of thermodynamics is the general law of conservation of energy applied to any system in which energy transfer from or to the surroundings (through heat and work) is taken into account.

500
These are microscopic spheres of 60 atoms of pure carbon in a spherelike structure that resembles a geodesic dome... A: Hydrocarbons, B: Lipids, C: Crystals, D: Buckyballs
What is D: Buckyballs. "Buckyballs" are microscopic spheres of 60 atoms of pure carbon in a spherelike structure that resembles a geodosic dome. Also called fullerenes or buckminsterfullerenes, they were named after R. Buckminster Fuller who invented the geodosic dome. Buckyballs are of great interest to scientists because they contain a cavity large enough to hold other elements, even whole molecules. Once an element has been deposited into the cavity, it cannot emerge without being heated to high temperatures. This technology may someday be used to deliver medication to specific locations within the body.