MCQs

Q191: The audible range of normal bat ear is ______?

• A) 20 Hz to 120 kHz
• B) 20 Hz to 20 kHz
• C) 20 kHz to 110 kHz

Q192: Three essential elements needed for the healthy growth of plants are _____?

• A) Carbon (C), Oxygen (O), and Hydrogen (H)
• B) Phosphorus (P), Potassium (K), and Nitrogen (N)
• C) Helium (He), Neon (Ne), and Argon (Ar)

Q193: Rainbow is formed due to ______?

• A) Emission of light
• B) Absorption of light
• C) Refraction of light

Q194: Water is a ______?

• A) Polar solvent
• B) Non-polar solvent
• C) Amphiphatic solvent

Q195: Greenhouse effect is an environmental problem which is caused by increasing amount of ________ in the atmosphere

• A) Oxygen
• B) Argon
• C) Carbon Dioxide

Q196: Mosquito is sitting on the human skin and sucking blood that organism is an example of _____?

• A) Parasite (Parasitism)
• B) Predator
• C) Host

Q197: The body system that controls and coordinates for the function of all other organ systems is called ____?

• A) Circulatory System
• B) Nervous System
• C) Respiratory System

Q198: What is the colour of phenolphthalein indicator in basic medium?

• A) Red
• B) Yellow
• C) Pink

Q199: Which among the following is manned spacecraft that took the humans to the moon?

• A) Apollo-15
• B) Apollo-16
• C) Apollo-17

Q200: The current which flows in one direction is called _____?

• A) Alternating current
• B) Direct current
• C) Fixed current