841. The planet of the solar system which has the maximum number of moons is______?
A: Venus
B: Jupiter
C: Saturn
D: Uranus
842. Approximately, how many times each day do our heart valves open and close normally?
A: 1,00,000
B: 10,000
C: 1,50,000
D: 2,00,000
843. Urine is produced in _?
A: Lungs
B: Kidneys
C: Large intestine
D: Liver
844. Which one is the most common disease?
A: Leprosy
B: Dental
C: Headache
D: Migraine
845. Which of the following gland has the shape of a butterfly?
A: Pituitary gland
B: Thyroid gland
C: Adrenal gland
D: Pineal gland
846. Who invented the steamboat?
A: Robert Fulton
B: James Watt
C: Frank Whittle
D: George Stephenson
847. Which one is the brightest star in the night sky?
A: Sirius
B: Betelgeuse
C: Rigel
D: Polaris
848. What is the molecular formula for Nitric acid _ ?
A: HNO3
B: HNO2
C: HN2O2
D: H2NO4
849. The virus of AIDS affects the growth of________?
A: RBCs in blood
B: Hemoglobin
C: T cells in blood
D: Grey Cells in blood
850. Who invented logarithm tables?
A: John Napier
B: H. Moseley
C: N. Bohr
D: Chadwick
Admin