Which of the following statements is correct ?

• Protons are negatively charged and are present in the nucleus
• Electrons are positively charged and are present in the nucleus
• Electrons are negatively charged and are present in the orbits
• The entire mass of atom is distributed in the orbits
Correct Option: C  [ Electrons are negatively charged and are present in the orbits ]

Remark:

When a bus starts suddenly, the passengers sitting in the bus lean backward. This is because of :

• Inertia of rest
• Inertia of motion
• Momentum
• Gravity of the earth
Correct Option: A  [ Inertia of rest ]

Remark:

The acid present in the stomach of human beings is:

• HNO₃
• H₂CO₃
• HCl
• H₂SO₄
Correct Option: C  [ HCl ]

Remark:

Opium is derived from which part of poppy plant ?

• Seeds
• Leaves
• Bark
• Capsule
Correct Option: D  [ Capsule ]

Remark:

Every computer connected to the internet is identified by a unique four-part strings known as:

• IP Address
• Domain name
• Host Address
• None of these
Correct Option: A  [ IP Address ]

Remark:

Who among the following is considered as the father of artificial intelligence ?

• Charles Babbage
• Lee De Forest
• John McCarthy
• J. P. Eckert
Correct Option: C  [ John McCarthy ]

Remark:

When a ship ?oats on water:

• it displaces no water
• the mass of water displaced is equal to the mass of the ship
• the mass of water displaced is lesser than the mass of the ship
• the mass of water displaced is greater than the mass of the ship
Correct Option: B  [ the mass of water displaced is equal to the mass of the ship ]

Remark:

What is Air Quality Index ?

• It tells about sound pollution.
• It measures air pollution mainly sulphur content in the air.
• It measures ozone levels in the selected area.
• It checks the colour of the air.
Correct Option: C  [ It measures ozone levels in the selected area. ]

Remark:

Muscle fatigue is due to accumulation of

• Carbon Dioxide
• Creatinine
• Lactic acid
• Ethyl alcohol
Correct Option: C  [ Lactic acid ]

Remark:

Which of the following is the best conductor of heat ?

• mercury
• silver
• leather
• benzene
Correct Option: B  [ silver ]

Remark: