Boat Conformation

Q. Which conformation of cyclohexane is known to have 'flagpole hydrogens'?

1. Chair
2. Twist-boat
3. Half-chair
4. Boat

Q.

What is the name of the cyclohexane conformation?

1. Chair

2. Half chair

3. Twist Boast

4. Boat

Q. Select the boat conformation from the following.

1. 
2. 
3. 
4.