A thing which easily catches fire. (one word substitution)

• Efforescent
• Callous
• Impatient
• Inflammable
Correct Option: D  [ Inflammable ]

Remark:

One who considers the happiness and well being of others:

• Atheist
• Altruist
• Alchemist
• Aesthete
Correct Option: B  [ Altruist ]

Remark:

One who lacks knowledge:

• Ignorant
• Credulous
• Intelligent
• Poor
Correct Option: A  [ Ignorant ]

Remark:

Love for the whole world is called

• Patriotism
• Generousness
• Philanthropy
• Nobility
Correct Option: C  [ Philanthropy ]

Remark:

The group, especially in the arts, regarded as being the most experimental.

• avant-garde
• iconoclast
• revolutionary
• nerd
Correct Option: A  [ avant-garde ]

Remark:

One who helps people by giving them money or other aid.

• benefactor
• beneficiary
• tycoon
• patriot
Correct Option: A  [ benefactor ]

Remark:

Official in-charge of a museum :

• Curator
• Administrator
• Dean
• Supervisor
Correct Option: A  [ Curator ]

Remark:

The study of population is called:

• Biography
• Cartography
• Anthropology
• Demography
Correct Option: D  [ Demography ]

Remark:

Living at the same time:

• coincident
• concurrent
• contemporary
• concomitant
Correct Option: C  [ contemporary ]

Remark:

The act of killing one's own father:

• Parricide
• Patricide
• Fratricide
• Parasite
Correct Option: B  [ Patricide ]

Remark: