General Science and Ability

**Diamond is a very expensive ornament. It is composed of a single element:**A) CarbonB) GoldC) SilverD) Platinum Show Answer Correct Answer: A – Carbon

**Which of the following layers makes radio transmission possible?**A) TroposphereB) IonosphereC) MesosphereD) Stratosphere Show Answer Correct Answer: B – Ionosphere

**Which of the following explains the reason why there is no total eclipse of the sun?**A) Size of the Earth in relation to that of the moonB) Orbit of the moon around EarthC) Direction of rotation of Earth around the sunD) Area of the sun covered by the moon Show Answer Correct Answer: D –…

**Television signals are converted into light signals by:**A) Optical fiberB) TransistorC) DecoderD) Photodiode Show Answer Correct Answer: D – Photodiode

**Where do most asteroids lie?**A) In asteroid belt between the orbits of Mars and JupiterB) In asteroid belt between the orbits of Mars and VenusC) In asteroid belt between the orbits of Jupiter and VenusD) Everywhere in the sky Show Answer Correct Answer: A – In asteroid belt between the orbits of Mars and Jupiter

**The number of spark plugs needed in a diesel engine is:**A) 0B) 1C) 2D) 4 Show Answer Correct Answer: A – 0

**The half-life of a radioactive element is 8 days. How long will it take to reduce it from 10 mg to 5 mg?**A) 4 daysB) 12 daysC) 16 daysD) 8 days Show Answer Correct Answer: D – 8 days

**The term ‘Blue Shift’ is used to indicate:**A) Doppler effect in which an object appears bluer when moving towards the observer or observer is moving towards the objectB) Turning a star from white to blueC) In future the sun would become blueD) Black hole was blue at its start Show Answer Correct Answer: A –…

**Kilowatt-hour is a unit of:**A) PowerB) Electric currentC) Electrical energyD) Time Show Answer Correct Answer: C – Electrical energy

**The sensitive layer of the eye is:**A) ChoroidB) ScleraC) RetinaD) Cornea Show Answer Correct Answer: C – Retina