Question: The most important stimulant in tea leaves is?

• 1. Phenylalanine
• 2. Caffeine
• 3. Brucine
• 4. None

Question: X ray was discovered by___?

• 1. Wilhelm Rontgen
• 2. Marie Curie
• 3. Alfred Nobel
• 4. None

Question: ___ is a branch of science which deals with.

• 1. Light
• 2. Motion
• 3. Sound
• 4. All

Question: ___________ is the lightest substance on the earth.

• 1. Nitrogen
• 2. Oxygen
• 3. Hydrogen
• 4. None of these

Question: "Titan "is satellite of?

• 1. Saturn
• 2. Venus
• 3. Neptune
• 4. Earth

Question: “Ricket” is a disease due to deficiency of?

• 1. Vitamin D
• 2. Vitamin A
• 3. Vitamin K
• 4. Vitamin B

Question: To an astronaut in the spacecraft, the sky appears to be.

• 1. White
• 2. Red
• 3. Blue
• 4. Dark

Question: Heat of sun reaches the earth by ________?

• 1. Convection
• 2. Radiation
• 3. Conduction
• 4. None of these

Question: Which of the following is not a power resource______?

• 1. Petroleum
• 2. Hydel Power
• 3. Magnetite
• 4. Coal

Question: Which cannot be considered as a renewable source of energy?

• 1. Wind
• 2. Solar
• 3. Petroleum
• 4. all of these