Q:

Rust forms when _____ reacts with chemicals in rocks.

A) Water	B) Oxygen
C) Nitrogen	D) Carbondioxide

Answer & Explanation Answer: B) Oxygen

Explanation:

Rust forms when oxygen reacts with chemicals in rocks, and that is often the case with many other elements in general. Like a copper nail being exposed to the air will rust.

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Q:

Which of the following is not a subatomic particle?

A) neutron	B) ion
C) electron	D) proton

Answer & Explanation Answer: B) ion

Explanation:

The particles which makes upon an atom are called subatomic particles. Electrons, protons and Neutrons that makes an atom are called subatomic particles.

Whereas,

An ion is an atom or group of atoms in which the number of electrons is different from the number of protons.

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Q:

Study of inter relationship between living organism and their environment is called _______

A) Plant Geography	B) Plant social science
C) Ecology	D) Ecosystem

Answer & Explanation Answer: C) Ecology

Explanation:

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Q:

In ovaries, the final products of meiosis are

A) haploid gametes	B) diploid gametes
C) Both A & B	D) None of the above

Answer & Explanation Answer: A) haploid gametes

Explanation:

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Q:

Energy produced in nuclear reaction is given by

A) Charle's law	B) Grahm's law
C) Gay - Lussac's law	D) Einstein's law

Answer & Explanation Answer: D) Einstein's law

Explanation:

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Q:

Which statement describes decomposers?

A) Decomposers are insignificant organisms in the ecosystem and can be absent in some ecosystems.	B) Decomposers can produce their own source of energy and can sometimes act as primary producers.
C) Decomposers are those organisms that recycle matter in the ecosystem..	D) All the above

Answer & Explanation Answer: C) Decomposers are those organisms that recycle matter in the ecosystem..

Explanation:

Decomposers are organisms that break down dead or decaying organisms, and in doing so, they carry out the natural process of decomposition.

The statement "Decomposers are those organisms that recycle matter in the ecosystem" describes decomposers.

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Q:

Which is Largest Stadium in the world?

Answer

Strahov Stadium in Praha,Czech Republic accommodation 240000 persons

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Subject: Longest, Shortest, Deepest

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Q:

Air temperatures are effected by slope and orientation as slopes facing into the Sun will be

A) Warmer than those facing away	B) Colder than those facing away
C) Neither warmer nor colder than those facing away	D) None of these

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