General Science/Everyday Science MCQs
Topic Notes: General Science/Everyday Science
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
1
A rapid downhill flow of snow is called:
Answer:
rapid downhill flow of snow is called:
Avalanches occur on steep snow-covered slopes. They are triggered by new snowfall or disturbances. They can travel at high speeds, burying everything in their path.
---
2
Which international agreement addresses climate change by reducing emissions?
Answer:
greement addresses climate change by reducing emissions?
The Kyoto Protocol set binding emission reduction targets. It was adopted in 1997. Later agreements built upon it, such as the Paris Agreement.
---
3
Which layer of Earth is semi-solid and responsible for convection currents?
Answer:
nd responsible for convection currents?
Heat from the core drives convection in the mantle. This movement causes plate tectonics. It leads to earthquakes and volcanic activity.
---
4
Which ocean current keeps Western Europe warmer than expected for its latitude?
Answer:
Gulf Stream
The Gulf Stream carries warm water from the tropics. This moderates Europe’s climate. Without it, winters would be much harsher.
---
5
Which soil horizon is known as the “parent material”?
Answer:
C horizon
The C horizon contains weathered rock fragments. It lies beneath topsoil and subsoil. Over time, it contributes to new soil formation.
---
6
Which is a direct impact of acid rain?
Answer:
Both B and C
Acid rain dissolves nutrients in soil, harming crops. It also corrodes limestone and marble. Famous monuments like the Taj Mahal have been affected.
---
7
Which of these natural disasters can trigger a tsunami?
Answer:
isasters can trigger a tsunami?
Though most tsunamis are caused by earthquakes, volcanoes and impacts can also displace ocean water. All involve sudden energy release. The resulting waves can be devastating.
---
8
Which rock type forms when existing rocks are changed by heat and pressure?
Answer:
Metamorphic
Metamorphic rocks form from alteration of pre-existing rocks. Examples include marble and slate. They form deep inside Earth.
---
9
The El Niño phenomenon is associated with:
Answer:
ssociated with:
El Niño alters global weather by warming equatorial Pacific waters. It causes droughts in some regions and floods in others. It is monitored by meteorologists worldwide.
---
10
Which atmospheric gas is essential for photosynthesis?
Answer:
Carbon dioxide
Plants absorb CO₂ to make food through photosynthesis. They release oxygen as a byproduct. This balances Earth’s ecosystems.
---