Electrochemistry, Chemistry

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Explain construction & working of calomel electrode.

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Explain preservation by preservatives, Q. Explain Preservation by Preservat...

Q. Explain Preservation by Preservatives? Preservatives, as you may already know, belong to a class of food additives that extend shelf life by inhibiting microbial growth, o

Which is the best reducing agent at 6530 k ? co or c ? , In industries 653k...

In industries 653k is very low temperature so co is the best reducing agent.

Maximum number of unpaired electron in d orbitals, The maximum number of u...

The maximum number of unpaired electron can be present in  d orbitals are: (1) 1        (2) 3         (3) 5       (4) 7 Ans: 5

Enthalpy, calculate the enthalpy of combustion for acetic acid using standa...

calculate the enthalpy of combustion for acetic acid using standard enthalpies of formation.

Ions, How can you find the formula for a specific ion?

How can you find the formula for a specific ion?

The frequency corresponding to transition & hydrogen atom, The frequency co...

The frequency corresponding to transition n= 2   to n =1   in hydrogen atom is: (1) 15.66 x 10 10 Hz                           (2)  24.66 x 10 14 Hz          (3) 30.5

What is co-ordination number, The number of appositively charged ions surro...

The number of appositively charged ions surrounded a certain ion in an ionic crystal lattice is known as co- ordination number.

The electrons in different shells, Which of the following explains the sequ...

Which of the following explains the sequence of filling the electrons in different shells: (1)  Hund's rule (2) Octet rule (3) Aufbau principle (4) All of these Ans

Determine molecular formula, Diazomethane has the following composition by ...

Diazomethane has the following composition by mass: 28.57% c ,4.80% h and 66.64% n . The molar mass of diazometane is 42.04 g/mol. Find the molecular formula of diazomethane and dr

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