The whole universe is made up of almost _______of Hydrogen?

A. 50%
B. 60%
C. 70%
D. 80%

The Electronegativity of Hydrogen is _____.

A. 2.8
B. 2.2
C. 3.1
D. 1.8

The Ionization energy of Hydrogen is __________?

A. 10.54ev
B. 12.54ev
C. 13.6ev
D. 17.56ev

The bond energy of Hydrogen molecule is__________?

A. 110kcal/mol
B. 106kcal/mol
C. 104kcal/mol
D. 150kjcal/mol

Which of the following is non spontaneous cell?

A. Electrolytic cell
B. Galvanic cell
C. Daniel cell
D. Not

In electrolysis of NaCl the product obtained at cathode is_______.

A. Sodium ions
B. Chloride ions
C. Both
D. Remain at the bottom of the cell

During electrolysis of Water, the product obtained at cathode is ___________?

A. Hydrogen gas &water
B. Oxygen gas &water
C. Only oxygen
D. Only water

The equation that represents the relationship of Faraday’s first law of electrolysis is _______?

A. Z=at
B. W=zat
C. W=z/at
D. Z= at/m

In Dry cell, cathode is made up of_______?

A. Zinc
B. Carbon (graphite)
C. Zncl²
D. Mno²(pyrolusite)

Which of the following statements is true when we see ‘rainbow’ ?

A. We face sun and raindrops
B. The sun remains behind us and we face raindrops
C. In light rainfall, we face sun
D. The sky remains clear and the sun is at lower position in the sky