MCQs

Q161: Law of conservation of momentum defines that the total momentum of a system of two bodies before and after collision ______?

• A) Remains constant
• B) Retains more momentum
• C) Losses some momentum

Q162: The molecular model of DNA which suggests the basic mechanism replication was proposed by?

• A) James Watson and Francis Crick
• B) Charles Darwin and Gregor Mendel
• C) Louis Pasteur and Robert Koch

Q163: Which type of vitamin strengthens bones and teeth and prevents a disease called Rickets; which causes bones to become soft and weak?

• A) Vitamin C
• B) Vitamin D
• C) Vitamin B

Q164: Which colour has largest wavelength in the spectrum of white light?

• A) Violet
• B) Green
• C) Red

Q165: Our galaxy (Milky Way Galaxy) is _____ in shape.

• A) Irregular
• B) Spiral
• C) Elliptical

Q166: MRI is stands for _____?

• A) Magnetic Resonance Imaging
• B) Magnetic Related Imaging
• C) Both A and B

Q167: The ozone layer is present in the atmosphere approximately ____?

• A) 5 to 10 Km high up the ground
• B) 16 to 20 Km high up the ground
• C) 12 to 50 Km high up the ground

Q168: Barcode reader is a device ____?

• A) Input
• B) Output
• C) Display

Q169: Which is the coldest planet in the Solar System?

• A) Uranus
• B) Neptune
• C) Both A and B

Q170: The symbol of element Copper is?

• A) Ag
• B) Cu
• C) He