Question : Which of the following is/are 'rain clouds'?

1 Cirrus

2 Nimbostratus

3 Cumulonimbus

4 Altocumulus

Option 1: 1 and 2 only

Option 2: 2 and 3 only

Option 3: 3 and 4 only

Option 4: 1 and 4 only

Question : A 'Market Economy' is one in which

Option 1: is controlled by the government

Option 2: is free from the government control

Option 3: is influenced by international market forces

Option 4: All of these

Question : In which among the following markets does a firm not exercise control over price?

Option 1: Mixed competition

Option 2: Monopoly

Option 3: Oligopoly

Option 4: Perfect competition

Question : Which of the following statements is true?

Option 1: A Primary key is also a candidate key.

Option 2: Each relation has at least one foreign key.

Option 3: Foreign keys can't have null values.

Option 4: A Primary key is also an alternate key.

Question : Which among the following is also called as 'the power house of the cell'?

Option 1: Plastids

Option 2: Mitochondria

Option 3: Golgi bodies

Option 4: Cell wall