Boron cannot form which one of the following anion | Chemistry Questions & Answers

Q:

Lime water turns milky when carbon dioxide is passed through it. It is due to the formation of

A) Calcium Carbonate	B) Barium Carbonate
C) Calcium Hydrogen Carbonate	D) Calcium Oxide

Answer & Explanation Answer: A) Calcium Carbonate

Explanation:

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0 1072

Q:

The volume of 10 g of gas X is 5.6 litre at NTP. What is the molecular weight of X?

A) 40	B) 60
C) 50	D) 20

Answer & Explanation Answer: A) 40

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0 1105

Q:

____ is not an allotrope of carbon.

A) Buckminsterfullerene	B) Carbon Dioxide
C) Diamond	D) Graphite

Answer & Explanation Answer: B) Carbon Dioxide

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1 903

Q:

If we take a small amount of washing soda and add approximately 1 mL of dilute hydrochloric acid to it, what will we observe?

A) only neutralisation reaction occurs, no gas is released	B) white-coloured precipitate is formed
C) CO2 gas comes out with brisk effervescence	D) H2 gas comes out with pop sound

Answer & Explanation Answer: C) CO2 gas comes out with brisk effervescence

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Q:

Group 8A of the periodic table contains the

A) least reactive metals	B) most reactive nonmetals
C) most reactive metals	D) least reactive nonmetals

Answer & Explanation Answer: D) least reactive nonmetals

Explanation:

Helium (He), Neon(Ne), Argon(Ar), Krypton (Kr), Xenon (Xe), Radon (Rn) and Ununoctium (Uuo) are present group 8A.

They have fully filled orbitals and hence are most stable amongst all the elements in the periodic table and are considered as least reactive least reactive non-metals.

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1 11030

Q:

Which among the following statements are TRUE regarding synthetic fibre?

I. They melt after catching fire.

II. They are more durable.

III. They are prepared by a number of processes using petrochemicals.

A) Only I and II	B) Only I and III
C) Only II and III	D) All I, II and III

Answer & Explanation Answer: D) All I, II and III

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0 8009

Q:

The strongest interactions between molecules of hydrogen chloride are

A) dipole-dipole interactions	B) hydrogen bonds
C) covalent bonds	D) ionic bonds

Answer & Explanation Answer: A) dipole-dipole interactions

Explanation:

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Q:

Which subatomic particle has a negative charge?

A) Neutron	B) Proton
C) Ion	D) Electron

A) Option 1	B) Option 2
C) Option 3	D) Option 4

Boron cannot form which one of the following anions?

(1) $B O_{2}^{-}$

(2) $B F_{6}^{3 -}$

(3) $B H_{4}^{-}$

(4) $B (O H)_{4}^{-}$

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Boron cannot form which one of the following anions? (1) BO2- (2) BF63- (3) BH4- (4) B(OH)4-

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Boron cannot form which one of the following anions?

(1) $B O_{2}^{-}$

(2) $B F_{6}^{3 -}$

(3) $B H_{4}^{-}$

(4) $B (O H)_{4}^{-}$