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Q:

' Yellow cake ' an item of smuggling across border s

A) A crude form of heroin	B) A crude form of cocaine
C) Uranium oxide	D) Unrefined gold

Answer & Explanation Answer: C) Uranium oxide

Explanation:

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Filed Under: Chemistry

Q:

Which one of the following can be used to confirm wether drinking water contains a gamma emitting isotope or not

A) Microscope	B) Scintillation counter
C) Lead plate	D) pectrophotometer

Answer & Explanation Answer: B) Scintillation counter

Explanation:

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Filed Under: Chemistry

Q:

Which of the following is a radioactive element

A) Sulphur	B) Polonium
C) Tellurium	D) Selenium

Answer & Explanation Answer: B) Polonium

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Filed Under: Chemistry

Q:

Artificial radioactivity elements are present in

A) s - block	B) p - block
C) d - block	D) f - block

Answer & Explanation Answer: D) f - block

Explanation:

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Filed Under: Chemistry

Q:

In nuclear reactor,Chain reaction is controlled by introducing

A) cadmium rod	B) iron rod
C) platinum rod	D) graphite rod

Answer & Explanation Answer: A) cadmium rod

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Filed Under: Chemistry

Q:

In atomic reactors,graphite is used as

A) lubricant	B) fuel
C) linear of the ractor	D) moderator

Answer & Explanation Answer: D) moderator

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Filed Under: Chemistry

Q:

Energy produced in nuclear reaction is given by

A) Charle's law	B) Grahm's law
C) Gay - Lussac's law	D) Einstein's law

Answer & Explanation Answer: D) Einstein's law

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Filed Under: Chemistry

Q:

At what time between 2 and 3 o'clock will the hands of a clock be together?

A) (9 + 10/11) min past 2	B) (10 + 10/11) min past 2
C) (11 + 10/11) min past 2	D) (12 + 10/11) min past 2

Answer & Explanation Answer: B) (10 + 10/11) min past 2

Explanation:

At 2 o'clock, the hour hand is at 2 and the minute hand is at 12, i.e. they are 10 min spaces apart.

To be together, the minute hand must gain 10 minutes over the hour hand.

Now, 55 minutes are gained by it in 60 min.

$\therefore$ 10 minutes will be gained in $\frac{60}{55} \times 10$ min. = $10 \frac{10}{11}$ min.

The hands will coincide at $10 \frac{10}{11}$ min. past 2.

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Filed Under: Clocks
Exam Prep: Bank Exams
Job Role: Bank PO

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