Q:

What happens in an oxidation reaction?

A) Protons are lost.	B) Electrons are lost
C) Neutrons are lost.	D) Electrons are gained.

Answer & Explanation Answer: B) Electrons are lost

Explanation:

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Q:

Which among the following is false about natural rubber?

A) It is an elastomer	B) It is a monomer of cisisoprene
C) Natural rubber is a polymer of chloroprene	D) It is heated with sulphur compounds to improve its properties

Answer & Explanation Answer: B) It is a monomer of cisisoprene

Explanation:

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Q:

Syngamy results information of

A) haploid zygote	B) diploid zygote
C) non-motile male gametes	D) motile male gametes

Answer & Explanation Answer: B) diploid zygote

Explanation:

Syngamy, also known as fertilisation occurs between the male and female gametes. Syngamy may occur either externally, outside the body of organisms or internally, inside the body. Syngamy leads to formation of a specialised cell called diploid zygote.

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Q:

Features and habits that help animals to adapt to their surroundings are a result of the process of ______________.

A) maturation	B) evolution
C) progression	D) renewal

Answer & Explanation Answer: B) evolution

Explanation:

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Q:

What is the number of atoms in 46 g of sodium-23 (N = Avogadro constant)?

A) N/2	B) N
C) 2N	D) 23 N

Answer & Explanation Answer: C) 2N

Explanation:

Number of atoms in 46 grams of sodium - 23 will be 2N.

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Q:

Molybdenite is an ore/mineral of

A) Molybdenum	B) Nickel
C) Silver	D) Tin

Answer & Explanation Answer: A) Molybdenum

Explanation:

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Q:

Which of the following is the third member of the Dobereiner triad, that also features Lithium and Sodium?

A) Potassium	B) Boron
C) Barium	D) Hydrogen

Answer & Explanation Answer: A) Potassium

Explanation:

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Q:

Myanmar shares around ___________ border with India.

A) 1,238 km	B) 1,338 km
C) 1,438 km	D) 1,643 km

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