The oxidation numbers of hydrogen in KH,MgH₂ and NaH are respectively
The oxidation numbers of hydrogen in KH,MgH₂ and NaH are respectively Options (a) 2,1 and -2 (b) 1,1 and 1…
7 years ago
Chemistry
If 0.1 M of a weak acid is taken, and its percentage of degree of ionization
If 0.1 M of a weak acid is taken, and its percentage of degree of ionization is 1.34%, then calculate…
7 years ago
Arrange the following in increasing order of acidity H₃PO₄ , H₂CO₃ , HCl , HI
Arrange the following in increasing order of acidity H₃PO₄ , H₂CO₃ , HCl , HI Options (a) H₂CO₃ < H₃PO₄…
7 years ago
Which of the following is always feasible
Which of the following is always feasible Options (a) ΔH = TΔS (b) ΔH (+ve),TΔS(-ve) and ΔH>TΔS (c) ΔH(-ve),TΔS(+ve) and…
7 years ago
If in a container no mass and no heat exchange occurs then it constitutes a
If in a container no mass and no heat exchange occurs then it constitutes a Options (a) closed system (b)…
7 years ago
Which type of bond is there in H₂S molecules
Which type of bond is there in H₂S molecules Options (a) ionic bond (b) coordinate (c) covalent bond (d) all…
7 years ago
Which of the following hydrogen bonds are strongest in vapour phase
Which of the following hydrogen bonds are strongest in vapour phase Options (a) HF --- HF (b) HF --- HCl…
7 years ago
The first ionisation potential will be maximum for
The first ionisation potential will be maximum for Options (a) lithium (b) hydrogen (c) uranium (d) iron Correct Answer: hydrogenExplanation:No…
7 years ago
The amount of energy,which is released due to the addition of extra electron
The amount of energy,which is released due to the addition of extra electron to the outermost orbital of gaseous atom,is…
7 years ago
The number of unpaired electrons in 1s² 2s² 2p³ is
The number of unpaired electrons in 1s² 2s² 2p³ is Options (a) 3 (b) 1 (c) 5 (d) 2 Correct…
7 years ago