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- Question
What is Iron Ore used for?
Options- A. Aluminium
- B. Copper
- C. Steel
- D. Brass
- Correct Answer
- Steel
ExplanationThe 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.
- 1. Special 3-D photographs which have been taken with laser beams (and which make the objects look real) are called what?
Options- A. Holograms
- B. 3D special effects
- C. Portraits
- D. DVD Discuss
- 2. What is the value of the Least Distance of Distinct vision (in cm) for a normal human being?
Options- A. 2.5
- B. 25
- C. 58
- D. 60 Discuss
- 3. Which one among the following stars is nearest to the earth?
Options- A. Proxima Centauri
- B. Sirius
- C. Arcturus
- D. Spica Discuss
- 4. Most Explosive Type of Volcano is
Options- A. The Cinder Cone
- B. Rhyolite caldera complexes
- C. Shield Volcanoes
- D. The Basault Volcanoes Discuss
- 5. Which layer of the atmosphere contains the ozone layer?
Options- A. Troposphere
- B. Stratosphere
- C. Thermosphere
- D. Mesosphere Discuss
- 7. Genetic alteration probably refers to altering what
Options- A. Genes found on ribosomes
- B. Genes found on chromosomes
- C. Genes found on cytoplasm
- D. All of the above Discuss
- 8. A universal recipient blood group belongs to
Options- A. O
- B. A
- C. B
- D. AB Discuss
- 9. Which statement best describes an O3 molecule?
Options- A. The double bond in ozone switches back and forth between the two outer oxygen atoms
- B. An ozone molecule contains one single bond and one double bond
- C. Each atom in ozone is connected to another atom by 1.5 bonds.
- D. None Discuss
- 10. Persons with which blood group are called universal donors?
Options- A. AB
- B. A
- C. O
- D. B Discuss
General Science problems
Search Results
Correct Answer: Holograms
Correct Answer: 25
Correct Answer: Rhyolite caldera complexes
Correct Answer: Stratosphere
Explanation:
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.
Correct Answer: Genes found on chromosomes
Correct Answer: AB
Explanation:
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."
Correct Answer: An ozone molecule contains one single bond and one double bond
Explanation:
Ozone molecule has one single bond and one double bond.
Correct Answer: O
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