The forces present in the crystals of naphthalene are
The forces present in the crystals of naphthalene are Options (a) van der Waal's forces (b) hydrogen bonding (c) electrostatic…
7 years ago
Memory
In hydrogen spectrum, the different line of Lyman series are present in
In hydrogen spectrum, the different line of Lyman series are present in Options (a) UV field (b) IR field (c)…
7 years ago
The metal having the highest melting point is
The metal having the highest melting point is Options (a) chromium (b) diamond (c) tungsten (d) silver Correct Answer: tungstenExplanation:Tungsten…
7 years ago
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
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