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

Q:

Atomic explosion is triggered by

A) thermo nuclear reaction	B) chemical reaction
C) controlled chain reaction	D) uncontrolled chain reaction

Answer & Explanation Answer: D) uncontrolled chain reaction

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Q:

Which is known as carbolic acid?

A) Phenol	B) Ethanol
C) Acetic acid	D) Oxalic acid

Answer & Explanation Answer: A) Phenol

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Q:

On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because ________

A) Mercury is a metal	B) Density of mercury is greater than that of water
C) Cohesion of mercury is greater than its adhesion with glass	D) Cohesion of water is greater than its adhesion with glass

Answer & Explanation Answer: C) Cohesion of mercury is greater than its adhesion with glass

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Q:

Terylene is a condensation polymer of ethylene glycol and which acid?

A) Benzoic Acid	B) Salicylic acid
C) Phthalic acid	D) Terephthalic acid

Answer & Explanation Answer: D) Terephthalic acid

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Q:

The most serious air pollutant causing health hazard is

A) Sulphur dioxide	B) Carbon monoxide
C) Ozone	D) Nitrogen oxide

Answer & Explanation Answer: A) Sulphur dioxide

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Q:

The biogas used for cooking is a mixture of which of the following ?

A) Carbon dioxide & oxygen	B) Isobutane & propane
C) Methane & carbon monoxide	D) Methane & carbon dioxide

Answer & Explanation Answer: D) Methane & carbon dioxide

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Q:

Why is Carbon Monoxide a pollutant ?

A) Reacts with haemoglobin	B) Makes nervous system inactive
C) It reacts with Oxygen	D) It inhibits glycolysis

Answer & Explanation Answer: A) Reacts with haemoglobin

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Q:

What is contained in Chlorophyll ?

A) sodium	B) potassium
C) manganese	D) magnesium

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