Q:

The most reactive of the following metals is

A) Al	B) Ca
C) Ni	D) Pb

Answer & Explanation Answer: B) Ca

Explanation:

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Filed Under: Chemistry
Exam Prep: Bank Exams

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Q:

Improve the bracketed part of the sentence.

After today's terrible test I am sure that my teacher's opinion (about) me will change for the worse.

A) for	B) of
C) in	D) no improvement

Answer & Explanation Answer: D) no improvement

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

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Q:

The instrument used to regulate temperature to particular degree is called

A) Thermostat	B) Thermometer
C) pyrometer	D) Thermocouple

Answer & Explanation Answer: C) pyrometer

Explanation:

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Filed Under: Inventions
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Q:

The first Indian to share the Oscar award was

A) Hargobind Khurana	B) Rabindranath Tagore
C) Bhanu Athaiya	D) None of these

Answer & Explanation Answer: C) Bhanu Athaiya

Explanation:

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Q:

Name the clan Buddha belonged to

A) Gnathrika	B) Maurya
C) Sakya	D) Kuru

Answer & Explanation Answer: C) Sakya

Explanation:

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Filed Under: Indian History

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Q:

Is B2+ Paramagnetic or Diamagnetic?

Answer

B2+ is a Paramagnetic.

The filled orbitals are $σ$ (1s) $^{2}$ , $σ^{*}$ (1s) $^{2}$ , $σ$ (2s) $^{2}$ , $σ^{*}$ (2s) $^{2}$ . The half-filled orbitals are $π$ (2p $_{x}$ ) and $π$ (2p $_{y}$ ). Since it posses 2 unpaired electrons, it is Paramagnetic in nature.

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Q:

At what time between 2 and 3 O'clock, the hands of a clock coincide ?

A) 1 10/11 minutes past 2	B) 1 10/11 minutes past 3
C) 1 11/10 minutes past 3	D) 11 10/11 minutes past 2

Answer & Explanation Answer: A) 1 10/11 minutes past 2

Explanation:

Since, in one hour, two hands of a clock coincide only once, so, there will be value.
Required time $T = \frac{2}{11} (H \times 30 + A^{o})$ minutes past H.
Here H - initial position of hour hand = 2 (since 2 O'clock)
A° = Required angle = 0° (Since it coincides)

$T = \frac{2}{11} (2 \times 30 + 0^{o})$ minutes past 2

=> $1 \frac{10}{11}$ minutes past 2

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Filed Under: Clock puzzles
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Q:

Two girls ate dinner together.

After that they both ordered iced tea. One girl drank them very fast and had finished five in the time it took the other to drink just one.

The girl who drank one died while the other survived. However, all of the drinks that were served turned out to contain poison.

How did the girl who drank the most survive?

Answer

The poison was in the ice. When the girl drank the iced tea, the ice was still fully frozen. Gradually, as the ice cubes melted the poison was released into the drink.

Hence, the girl who died, drunk the tea after the ice melted. So, she was died.

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