Many things that happen in everyday life can be attributed to scientific practices. It is also important that we recognize the science that is all around us. For example, during the formation of curd from milk, baking bread in the oven due to high temperatures, the physical properties of the dough change and the bread is baked.
With the help of soap, we remove dirt from our hands before cooking or eating. Have you ever thought about what makes soap clean our hands, how it removes germs, etc.? This is nothing more than the science we use every day. In our daily work, one way or another, science is hidden and works for us. These questions will tell you about different types of scientific activities that we use every day and will also be useful for various exams.
1. Which of the following waves does a regular TV remote use?
A. Radio waves
B.Laser
C. Infrared waves
D. Ultrasound waves
Reply. C
2. Below are the psychological manifestations of noise pollution.
(i) Vasospasm
(ii) Increased heart rate
(iii) Digestive cramps
(iv) Dilation of the eye pupil
Choose the correct options
A.(i) and (ii) are both correct
B.(i) and (iii) are correct
C.(ii) and (iv) are both correct
D.(i), (ii), (iii) and (iv) are correct
Reply. D
3. Which gases are safe and effective for all limited fires?
A. Nitrogen dioxide
B.Carbon dioxide
C. Sulfur dioxide
D.Nitrogen oxide
Reply. B
4. Which of the following statements is not true about lasers?
A. It is a technique that produces intense beams of light, ultraviolet or infrared rays of different wavelengths.
B. Even a diamond laser beam can drill a hole.
C. Many types of lasers have been made from solids such as ruby crystals and semiconductor materials, liquids and gases.
D. All waves in a laser beam travel in phase.
Reply. ONE
5. The drum of the Photostat machine is composed of which of the following parts:
A. Aluminum
B. Selenium
C. Bari
D. Cesium
Reply. B
GK questions and answers about classifying matter
6. What does it mean if a child has an IQ of 100?
A. The child’s performance is below average.
B. The child’s achievement is above average.
C. The child’s mental age is equal to the child’s actual age.
D. The child’s performance could not be better.
Reply. C
7. What bacteria create curd?
A. Lactic acid bacteria
B. Lactobacillus Acidophillus
C. Lactobacillus yellow
D.Bacillus radicicola
Reply. B
8. Which of the following bacteria found in soil produces a distinctive odor if it rains on dry soil?
A. Streptomycetes
B. Staphylococcus
C. Diplomacy
D. Bacteria
Reply. ONE
9. In poorly ventilated buildings, which of the following inert gases can accumulate?
A. Helium
B.Neon
C.Argon
D. Radon
Reply. D
10. Honey is sweeter than cane sugar or corn syrup. Which of the following carbon sugars is responsible for this?
A.Dextrose
B. Levulose
C.Sucrose
D.Fructose
Reply. B
11. Which of the following is an example of a renewable energy source?
A. Natural gas
B. Coal
C. Solar energy
D. Nuclear energy
Reply. C
12. What is the boiling temperature of water at sea level?
A. 0 degrees Celsius
B. 100 degrees Celsius
C. 212 degrees F
D. 273 Kelvin
Reply. B
13. Which of the following is NOT a component of air?
A. Oxygen
B. Nitrogen
C. Carbon dioxide
D. Chlorine
Reply. D
14. Which of the following statements about gravity is correct?
A. Gravity on Earth is stronger than on the Moon.
B. Gravity is a repulsive force.
C. Gravity only acts on objects with mass.
D. Gravity is a form of electromagnetic radiation.
Reply. C
15. What is the main function of the ozone layer in the Earth’s atmosphere?
A. Absorb ultraviolet (UV) rays from the sun
B. Create oxygen for photosynthetic plants
C. Regulates Earth’s temperature
D. Prevent cosmic rays from reaching the surface
Answer: A
GK questions and answers about modern technology
Categories: Optical Illusion
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