Question 1

The primary colors are-

Accepted Answer

The Primary Colours are Blue, Red and Green. By mixing all these three primary colours we get White colour. The Secondary Colours are - Yellow, Magenta and Cyan.

Question 2

Which layer of the atmosphere contains the ozone layer?

Accepted Answer

The ozone layer is a region of Earth's Stratosphere that absorbs most of the Sun's ultraviolet (UV) radiation. It contains high concentrations of ozone (O3) in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere. The Atmosphere is divided into 4 layers according to major changes in temperature. They are : 1. Troposphere, 2. Stratosphere, 3. Mesosphere and 4. Thermosphere. The farther away from earth, the thinner the atmosphere gets.

Question 3

Which one among the following stars is nearest to the earth?

Accepted Answer

Proxima Centauri is the nearest star to the Earth.

Question 4

What is Iron Ore used for?

Accepted Answer

The primary use of iron ore is in the production of iron. Most of the iron produced is then used to make steel. Steel is used to make automobiles, locomotives, ships, beams used in buildings, furniture, paper clips, tools, reinforcing rods for concrete, bicycles, and thousands of other items.

Question 5

Plants that grow in Saline Water are called

Accepted Answer

Plants that grow in Saline Water are called Halophytes.

Question 6

A universal recipient blood group belongs to

Accepted Answer

In transfusions of packed red blood cells, individuals with type O Rh D negative blood are often called universal donors. Those with type AB Rh D positive blood are called universal recipients. The immune system of a person with AB blood will accept blood from all possible donors, whether they have O, A, B, or AB blood. Since both A and B antigens are present in a person with AB blood, the recipient won't reject the blood. The body identifies that blood as "self" rather than "foreign."

Question 7

Which statement best describes an O3 molecule?

Accepted Answer

Ozone molecule has one single bond and one double bond.

Question 8

What is the first step in the refining of petroleum?

Accepted Answer

The first step in the refining of petroleum is distillation i.e, the fractionation of crude oil in atmospheric and vacuum distillation towers. The first process petroleum refinery is known as distillation. In this process, crude oil is heated and fed into a distillation column. As the temperature of the crude oil in the distillation column rises, the crude oil separates itself into different components, called "fractions." The fractions are then captured separately. Each fraction corresponds to a different type of petroleum product, depending on the temperature at which that fraction boils off the crude oil mixture.

Question 9

Anything that has Mass and takes up Space-

Accepted Answer

Anything that has Mass and takes up Space is called Matter. Matter has some mass and occupies some space. Mass means the amount of matter in an object. Space occupied by an object is called its Volume. The Study of Matter and and how matter changes is called Chemistry.

Question 10

Which statement fits the Frontier Ethic?

Accepted Answer

Frontier Ethic is Spending Earth's assets at the cost of losing resource capital. A frontier ethic assumes that the earth has an unlimited supply of resources. It is the notion of disregarding the Earth for the benefit or gain of man. If resources run out in one area, more can be found elsewhere or alternatively human ingenuity will find substitutes. This attitude sees humans as masters who manage the planet. It is completely Anthropocentric.

Question 11

Why is Golden Rice pale yellow in color?

Accepted Answer

Golden Rice (Oryza sativa) denotes a genetically modified rice capable of biosynthesizing and accumulating β-carotene (provitamin A) in the endosperm, yielding a characteristic yellow color in the polished grains. Golden rice was developed to help cope with vitamin A deficiency, a problem that prevails in developing countries, affecting millions (Underwood, 2000; UNICEF, 2000). Vitamin A deficiency causes mortality and growth retardation in children and frequently impairs vision, leading to blindness. It also contributes indirectly to anemia by interfering with iron bioavailability. The endosperm of Golden Rice (Oryza sativa) is yellow due to the accumulation of β-carotene (provitamin A) and xanthophylls. The product of the two carotenoid biosynthesis transgenes used in Golden Rice results in Pale Yellow color.

Question 12

Pollination by wind is called

Accepted Answer

Pollination by wind is called Anemophily or Wind pollination. The process of the transfer of pollen from one individual plant to another, whereby the pollen is carried by air currents is called Anemophily. Almost all gymnosperms (Non-flowering plants) are anemophilous, as are many plants in the order Poales, including grasses, sedges and rushes.

General Science Questions