A trend common to both for group I and VII elements in the periodic table as atomic number increases is
Options
(a) atomic radius increases (b) oxidising power increases (c) reactivity with water […]
Which of the following pairs show reverse properties on moving along a period from left to right and from top to down in a group?
Options
(a) Nuclear charge and electron affinity (b) […]
One of the characteristic properties of non-metals is that they
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(a) Are reducing agents (b) Form basic oxides (c) Form cations by electron gain (d) Are electro negative
Correct Answer:
Are reducing […]
1 c.c N₂O at NTP contains
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(a) (1.8/224) x 10²² atoms (b) (6.02/22400) x 10²³ molecules (c) (1.32/224) x 10²³ electrons (d) all the above
Correct Answer:
all the above
Explanation:
At N.T.P […]
The compound containing coordinate bond is
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(a) SO₃ (b) O₃ (c) H₂SO₄ (d) All of these
Correct Answer:
All of these
Explanation:
No explanation available. Be the first to write the explanation […]
Planar structure is shown by
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(a) CO₃²⁻ (b) BCl₃ (c) N(SiH₃)₃ (d) All of these
Correct Answer:
All of these
Explanation:
C in CO₃²⁻ and B in BCl₃ are sp²-hybridised thus acquire […]
100 mL each of 0.5 N NaOH, N/5 HCl and N/10 H₂SO₄ are mixed together. The resulting solution will be
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(a) acidic (b) neutral (c) alkaline (d) None of these
Correct Answer: […]
The smallest among the following ion is
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(a) Na⁺ (b) Mg²⁺ (c) Ba²⁺ (d) Al³⁺
Correct Answer:
Al³⁺
Explanation:
The size of an species decreases with increasing nuclear charge became the attraction […]
The stability of +1 oxidation state increases in the sequence:
Options
(a) Tl < In < Ga < Al (b) In < Tl < Ga < Al (c) Ga < In < Al […]
Be resembles much with
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(a) Li (b) Al (c) Zn (d) Ra
Correct Answer:
Al
Explanation:
Be resembles much with Al, due to diagonal relationship.
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