Carbon atom in C₂(CN)₄ are
Carbon atom in C₂(CN)₄ are Options (a) sp-hybridised (b) sp²-hybridised (c) sp-and sp² - hybridised (d) sp-sp² and sp³ -…
7 years ago
Easy
Which of the following oxides is amphoteric in character?
Which of the following oxides is amphoteric in character? Options (a) Co₂ (b) CaO (c) SiO₂ (d) SnO₂ Correct Answer:…
7 years ago
In the photo-electron emission,the energy of the emitted electron is
In the photo-electron emission,the energy of the emitted electron is Options (a) greater than the incident photon (b) same as…
7 years ago
In the periodic table, the element with atomic number 16 will be placed
In the periodic table, the element with atomic number 16 will be placed in the group Options (a) third (b)…
7 years ago
The electronegativity of the following elements increases in the order.
The electronegativity of the following elements increases in the order Options (a) C, N, Si ,P (b) N, Si, C,…
7 years ago
In which one of the following molecules the central atom does not have sp³
In which one of the following molecules the central atom does not have sp³ hybridization? Options (a) NH₄⁺ (b) CH₄…
7 years ago
The screening effect of d-electrons is
The screening effect of d-electrons is Options (a) equal to that of p-electrons (b) more than that of p-electrons (c)…
7 years ago
Electric configuration of chalcogens in their outermost orbit is
Electric configuration of chalcogens in their outermost orbit is Options (a) s²p³ (b) s²p⁴ (c) s²p⁵ (d) s²p⁶ Correct Answer:…
7 years ago
There is no S – S bond in
There is no S - S bond in Options (a) S₂O₄²⁻ (b) S₂O₅²⁻ (c) S₂O₃²⁻ (d) S₂O₇²⁻ Correct Answer: S₂O₇²⁻Explanation:No…
7 years ago
The correct order of the decreasing ionic radii among the following isoelectronic
The correct order of the decreasing ionic radii among the following isoelectronic species are : Options (a) Ca²⁺ > K⁺…
7 years ago