Question

Encircle the odd one out: giving reasons

a. Oxide, iodide, bromide, chloride.

b. Oxygen, gold, sulphur, ammonia.

c. Barium, chromium, calcium, zinc.

d. Amylase, lipase, peptones, pepsin.

e. Neutron, megatron, proton, electron.​

Answer 1

Answer:

a) oxide

b)ammonia

c)barium

d)peptones

e)megaton

Explanation:

a)elements form oxide compounds when they react with oxygen which is present in the 2nd period , 16th group chalcogen family

In the given options there are 3 elements from 17th group (halogen family) bromine (bromide) ,chlorine (chloride) ,iodine (iodide)

thus oxide (oxygen) from the 16th group is odd one out

b) oxygen , gold , sulphur are all are elements

but ammonia is an compound  and not a element which is mostly excreted as wastes by lizards and fishes

thus ammonia is the odd one out

c) the elements calcium , chromium and zinc are present in same period (4th period)

Ca is in 2nd group ,4th period

Cr is in 6th group ,4th period

Zn is in 12th group 4th period

but barium is present in 6th period 2nd group

thus barium is the odd one out

d)amylase ,lipase and pepsin are digestive enzymes which helps in digestion of food in which they breakdown the complex molecules  and insolable substances to simple ,water soulable substances

but peptones is not an enzyme that helps in the process of digestion and is a protein

thus peptones is the odd one out

d) the sub atomic particle of an atom is neutron, proton and electron

electron is negatively charged particle

proton is positively charged particle

neutron is having no charge

but megatron is an ion consisting of a large cluster of atoms, in which the charge is spread over many atoms

thus megatron is not a sub atomic part of an atom

thus megatron is the odd one out

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