CLASS: X :: Chemical Reactions and Equations :: Question & Answer
CLASS: X NCERT (CBSE)
SCIENCE
Chemical Reactions and Equations
Question & Answer
Question 1:Define a chemical change.
Answer: ...
CLASS: X :: Acids, Bases and Salts :: Question & Answer
CLASS: X
Acids, Bases and Salts
Question & Answer
Question (1): Define the terms: Acid, alkali and salt.
Answer:
An acid is a compound,...
CLASS: X :: Light-Reflection and Refraction
CLASS: X NCERT (CBSE)
PHYSICS
Light-Reflection and Refraction
Multiple Choice Questions
Light-Reflection
Question 1: Light is a form of energy produced by a ______ .
1. luminous object
2. transparent object
3....
CLASS: X NCERT (CBSE) SCIENCE: Chemistry- Acids, Bases and Salts
Summary
Acids, Bases and Salts
1. Acidic substances generate H+ ions in the medium, while basic ones liberate OH- ions in the medium.
2. Certain dyes are...
Human Eye and Colourful World CLASS: X NCERT (CBSE) PHYSICS
Summary
Accommodation of the Eye:The process by which the ciliary muscles change the focal length of an eye lens to focus distant or near objects...
CLASS: X NCERT (CBSE) Chemistry: For Class 10 – Carbon and its...
Summary
Carbon and its Compounds
• Study of the compounds of carbon is organic chemistry. They form the basis of living organisms and the things around...
CLASS: X :: Life Processes Nutrition
CLASS: X NCERT (CBSE)
BIOLOGY
Life Processes Nutrition
Question (1): Nutrition includes the study of _____________.
1. the organism's food
2. process of digestion
3. the way an organism obtains...
Planet Quiz
Planet Quiz
1. Now that Pluto is no longer included, how many planets are there in the Solar System?
2. What is the smallest planet in...
CLASS: X NCERT (CBSE) SCIENCE: Chemistry – Metals and Non-metals
SUMMARY
Metals and Non-metals
• An electrolyte is a compound (salt, acid or base), which in solution or in a molten state conducts an electric current...
Dr. APJ Abdul Kalam
Dr. APJ Abdul Kalam: The Missile Man of India and People's President
Introduction
Dr. Avul Pakir Jainulabdeen Abdul Kalam, popularly known as APJ Abdul Kalam, was...
Water Quiz
Water is one of the most common substances on the Earth. Covering over 70% of the surface of the Earth, it is easy to...
Technology Quiz
Technology Quiz
1. Solar power generates electricity from what source?
2. Did the Apple iPhone first become available in 2005, 2006 or 2007?
3. In terms of...
EARTH QUIZ
Earth Quiz
1. What is the name of the largest ocean on earth?
2. What are the two main metals in the earth’s core?
3. Which is...
ACID BASE QUIZ
Acid Base Quiz
What is an Acid?
Acids in solution have a pH below 7.0, a sour taste, releases hydroxyl ions in water, and turn litmus...
FOOD QUIZ
Food Quiz
1. The rice dish ‘paella’ comes from what country?
2. Deer meat is known by what name?
3. Are humans omnivore, herbivore or carnivore?
4. What...
Element-Symbol
Element-Symbol
1. Hydrogen - H
2. Helium - He
3. Lithium - Li
4. Beryllium - Be
5. Boron - B
6. Carbon - C
7. Nitrogen - N
8. Oxygen -...
Nature Quiz
Nature Quiz
1. What is the name of the world’s largest reef system?
2. Do male or female mosquitoes bite people?
3. True or false? Earth Day...
Human Body Quiz
Human Body Quiz
1. What is the name of the biggest part of the human brain?
2. The colored part of the human eye that controls...
CLASS: IX :: Sound
CLASS: IX NCERT (CBSE)
PHYSICS
Sound
Question 1: When a wave travels through a medium ______.
1. particles are transferred from one place to another
2. energy is transferred...
Animal Quiz
Animal Quiz
1. What food makes up nearly all (around 99%) of a Giant Panda’s diet?
2. True or false? Mice live for up to 10...
