Question Detail

The ejection of electrons when a metal surface is irradiated is known as

Black body radiation
Photoelectric effect
Zeeman effect
Atomic spectrum

Answer: Option B

Similar Questions :

1. Why is phosphorus kept under water ?

to make it wet
to make it durable
water forms a protective coating on it
to save it from catching fire when exposed to dry air

Answer: Option D

2. pH of blood is ?

10.4
9
7.4
4

Answer: Option C

3. The aqueous solution of which acids is called Vinegar ?

Acetic acid
Hydrochloric acid
Citric acid
Oxalic acid

Answer: Option A

4. The isotope atoms differ in ?

number of neutrons
atomic number
number of electrons
atomic weight

Answer: Option A

Explanation:

Important to note that isotope atoms have same atomic number.

5. Alloys made with mercury as one metal are called ?

mixtures
emulsions
solders
amalgams

Answer: Option D

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