Question : Select the option that expresses the given sentence in passive voice.

Myra installed the new software on her computer.

Option 1: The new software had installed Myra on her computer.

Option 2: The new software is installed by Myra on her computer.

Option 3: The new software were install by Myra on her computer.

Option 4: The new software was installed by Myra on her computer.

Question : Which mechanism is used by the computer virus 'worm' to duplicate itself?

Option 1: Swap

Option 2: Increment

Option 3: Spawn

Option 4: Swarm

Question : Silk is obtained from:

Option 1: Mulberry tree

Option 2: Saliva of the silk worm

Option 3: Larvae of silk worm

Option 4: Cocoon of silk worm

Question : Polio is caused by

Option 1: Bacteria

Option 2: Virus

Option 3: Fungus

Option 4: Protozoa

Question : Leptospirosis is a disease caused by

Option 1: Virus

Option 2: Fungus

Option 3: Protozoa

Option 4: None