Q:

The oxidation number of Cr in $K_{2} {Cr}_{2} O_{7}$ is

A) +6	B) -5
C) +3	D) -4

Answer & Explanation Answer: A) +6

Explanation:

We will rewrite the formula as an equation.

2K + 2Cr + 7O = 0

The zero comes from there being no overall charge on the compound.

Each oxidation number is represented by the element's symbol.

Since this compound is not a peroxide or superoxide, the oxidation value for O is -2

K being in group 1 has a +1 charge and therefore has an oxidation number of K is +1

Now, by putting known values in we have:

2(+1) + 2(Cr) + 7(-2) = 0

2 + 2Cr -14 = 0

2Cr = +12

Cr = +6.

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Filed Under: Chemistry
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13 6819

Q:

Who is the first female pilot to be inducted into the Indian Navy in 2017?

A) Tessy Thomas	B) Zaira Wasim
C) Shubhangi Swaroop	D) Dipa Karmakar

Answer & Explanation Answer: C) Shubhangi Swaroop

Explanation:

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Filed Under: General Awareness
Exam Prep: Bank Exams

0 6808

Q:

India’s first undersea tunnel is being constructed in which city?

A) Mumbai	B) Cochin
C) Kolkata	D) Hyderabad

Answer & Explanation Answer: A) Mumbai

Explanation:

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1 6803

Q:

Syadvad is a doctrine of

A) Lokayatism	B) Saivism
C) Jainism	D) Vaishnavism

Answer & Explanation Answer: C) Jainism

Explanation:

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Filed Under: Indian History

7 6803

Q:

Correct answer for the given blank out of the four alternatives.

The main failings were of conception and a political willingness to settle _________ easy options. _______________ the expansive declarationsof the need "to maintain effective security of all nuclear materials, _______________ includes nuclear materials used in nuclear weapons”, thesummits narrowed their _______________ to civilian holdings __________________ nonnuclear weapon states.

the summits narrowed their ______________

A) view	B) focus
C) attention	D) vision

Answer & Explanation Answer: B) focus

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

0 6802

Q:

The prime meridian passes through

A) Paris	B) Greenwich
C) New York	D) Delhi

Answer & Explanation Answer: B) Greenwich

Explanation:

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Filed Under: World Geography

13 6801

Q:

Rearrange the parts of the sentence in correct order.

We should learn our lesson
P-from this history and stay away
Q-of our neighbours
R-from interfering in the messy domestic politics

A) PRQ	B) PQR
C) QPR	D) RPQ

Answer & Explanation Answer: A) PRQ

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

0 6800

Q:

What is the currency of Indonesia?

A) rupiah	B) dinar
C) rangit	D) riyal

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