General Science and Ability

**In human eye, the light sensitive layer made of specialized nerve cells, rods and cones is called as:**A) The pupilB) The corneaC) The irisD) The retina Show Answer Correct Answer: D – The retina

**Erythrocytes are also called as:**A) Red blood cellsB) White blood cellsC) PlateletsD) Plasma Show Answer Correct Answer: A – Red blood cells

**Water is heated in a kettle. The inside water is heated by convection. A person sitting near the fire receives heat by:**A) ConductionB) ConvectionC) RadiationD) Reflection Show Answer Correct Answer: C – Radiation

**The measurement of rainfall is made by an instrument known as:**A) HygrometerB) BarometerC) HydrometerD) Rain gauge Show Answer Correct Answer: D – Rain gauge

**Light year is a unit of:**A) DistanceB) Time periodC) Light intensityD) Speed Show Answer Correct Answer: A – Distance

**Three elements needed for the healthy growth of plants are:**A) Nitrogen, Phosphorus, PotassiumB) Nitrogen, Carbon, PhosphorusC) Nitrogen, Potassium, CalciumD) Nitrogen, Sulfur, Phosphorus Show Answer Correct Answer: A – Nitrogen, Phosphorus, Potassium

**Copper can be converted into gold by:**A) HeatingB) Artificial RadioactivityC) ElectroplatingD) Chemical Reaction Show Answer Correct Answer: B – Artificial Radioactivity

**In winter an iron pipe feels colder than a wooden window. This is because wood is:**A) ConductorB) Non-ConductorC) Semi-ConductorD) Not a solid while iron is a solid Show Answer Correct Answer: B – Non-Conductor

**To measure the specific gravity of milk, the instrument used is:**A) HygrometerB) BarometerC) LactometerD) Hydrometer Show Answer Correct Answer: C – Lactometer

**The echo (reflected sound) will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least:**A) 1120 ftB) 120 ftC) 56 ftD) 100 ft Show Answer Correct Answer: C – 56 ft