Discussion
Home ‣ General Knowledge ‣ General Science Comments
- Question
Which is an example of an endothermic reaction?
Options- A. combustion
- B. mix of CaO with water
- C. coal is burnt
- D. photosynthesis
- Correct Answer
- photosynthesis
ExplanationA chemical reaction in which involves the absorption of heat from the environment is called a Endothermic reaction.
Examples : Dissolving ammonium chloride in water, photosynthesis, melting ice cubes, mixing of potassium chloride with water,...
In the contrast, chemical reactions involving release of heat are known as exothermic reactions.
Examples : Combustion, coal is burnt, mix of CaO with water,...
- 1. Data collected to date indicate that
Options- A. New species of bacteria may be discovered in wild animals.
- B. Humans and marine mammals cannot be infected by the same pathogens.
- C. Marine mammals do not get infectious diseases
- D. None of the above Discuss
- 2. Thermal energy is caused by the motion of
Options- A. atoms
- B. molecules
- C. Both A & B
- D. None of the above Discuss
- 3. Chemically marble is known as
Options- A. Calcareous rock
- B. Siliceous Rock
- C. Argillaceous Rock
- D. Metamorphic Rock Discuss
- 4. Which of the following is a function of Earth's atmosphere?
Options- A. supplies the oxygen and water for life
- B. screens out much of the Sun's ultraviolet radiation
- C. insulates the surface against temperature extremes
- D. All of the above Discuss
- 5. What is the best way to prevent pest infestation? Discuss
- 6. Glucose is stored in the human body as
Options- A. Sucrose
- B. Glycogen
- C. Cellulose
- D. None of the above Discuss
- 7. The chief constituent of gobar gas is
Options- A. Methane
- B. Carbon dioxide
- C. Ethane
- D. Hydrogen Discuss
- 8. Which is an example of a physical change?
Options- A. Dissolving sugar in water
- B. Breaking glass
- C. Melting of ice
- D. All of the above Discuss
- 9. Cartography is the science of
Options- A. coins
- B. maps
- C. cartoons
- D. None of the above Discuss
- 10. What is a group of emus called
Options- A. mob
- B. flock
- C. murder
- D. herd Discuss
General Science problems
Search Results
Correct Answer: None of the above
Correct Answer: Both A & B
Correct Answer: Calcareous rock
Explanation:
Chemically marble is known as Calcareous rock as it is composed of carbonate minerals like calcite or dolomite.
Correct Answer: All of the above
Explanation:
Here all the options given are important functions of Earth's atmosphere.
Correct Answer: Pest infestation is nothing but the presence of large number of pests at a place, typically so as to cause damage or disease Climatic conditions affect a considerable number of pests Some are more active during warmer periods than others As these summer insects invade your home, they're likely in search of food, water, shelter, or have encountered an entrance To pest-proof your home this summer, it's best to remove their 'WHY? or reason for entering your home * Keep your place clean and dry Make sure there is no food laying about * Removing food residue - food is a common attraction to a number of different pests * Regular disinfection of the surfaces
Correct Answer: Glycogen
Explanation:
Glucose stored in the form of glycogen in human bodies in the liver and muscles. Excess glycogen is stored as fat cells as liver can store a limited amount of glucose as glycogen.
Correct Answer: Methane
Correct Answer: All of the above
Explanation:
In all the above given options, there is no chemical change or reactions takes place only the shape or physical state is changed.
Correct Answer: maps
Explanation:
Cartography is the science which deals with the study and practice of making maps.
Correct Answer: mob
Comments
There are no comments.More in General Knowledge:
Programming
Copyright ©CuriousTab. All rights reserved.