Variable valency in general, is exhibited by
Variable valency in general, is exhibited by Options (a) transition elements (b) gaseous elements (c) non-metals (d) s-block elements Correct…
7 years ago
Chemistry
Which of the following is never true for cathode rays?
Which of the following is never true for cathode rays? Options (a) They possess kinetic energy (b) They are electromagnetic…
7 years ago
The structure of XeOF₄ is
The structure of XeOF₄ is Options (a) planar (b) tetrahedral (c) square pyramidal (d) pyramidal Correct Answer: square pyramidalExplanation:In XeOF₄,…
7 years ago
The two electrons in K-subshell will differ in
The two electrons in K-subshell will differ in Options (a) principal quantum number (b) azimuthal quantum number (c) magnetic quantum…
7 years ago
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
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