The set representing the correct order for the first ionisation potential is
The set representing the correct order for the first ionisation potential is
Options
(a) K > Na > Li (b) Be > Mg > Ca (c) B > C > N (d) Ge […]
Memory
Which one is electron deficient compound?
Which one is electron deficient compound?
Options
(a) NH₃ (b) ICl (c) BCl₃ (d) PCl₃
Correct Answer:
BCl₃
Explanation:
BCl₃ has six electrons in outer shell of boron atom.
Correct order of first IP among following elements Be, B, C, N, O is
Correct order of first IP among following elements Be, B, C, N, O is
Options
(a) B< Be < C
A trend common to both for group I and VII elements in the periodic table
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
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
One of the characteristic properties of non-metals is that they
Options
(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
1 c.c N₂O at NTP contains
Options
(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
The compound containing coordinate bond is
Options
(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
Planar structure is shown by
Options
(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
100 mL each of 0.5 N NaOH, N/5 HCl and N/10 H₂SO₄ are mixed together. The resulting solution will be
Options
(a) acidic (b) neutral (c) alkaline (d) None of these
Correct Answer: […]