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- Question
Unresolved dissonance is a characteristic of
- Correct Answer
- When the tension is unresolved, we have unresolved dissonance Unresolved dissonance is a characteristic of the baroque music The general characteristics of Baroque music is movement, energy, and tension
- 1. Wind and solar energy are examples of
Options- A. Non renewable
- B. Renewable
- C. Unsustainable
- D. Limited Discuss
- 2. What measures Air pressure?
Options- A. Barkometer
- B. Bolometer
- C. Spectrometer
- D. Barometer Discuss
- 3. Mirage is due to
Options- A. Magnetic disturbances in the atmosphere
- B. Equal heating of different parts of the atmosphere
- C. Unequal heating of different parts of the atmosphere
- D. Depletion of ozone layer in the atmosphere Discuss
- 4. Which compound is a nonelectrolyte?
Options- A. C2H6O
- B. HCl
- C. Na2CO3
- D. NaCl Discuss
- 5. Compressions and Rarefactions are characteristic of
Options- A. Longitudinal waves
- B. Transverse waves
- C. Both A & B
- D. Neither of A & B Discuss
- 6. In which layer is the pressure the highest?
Options- A. Ionosphere
- B. Stratosphere
- C. Troposphere
- D. Inner core Discuss
- 7. The modulus of elasticity for mild steel is approximately equal to
Options- A. 210 kN/mm2
- B. 100 kN/mm2
- C. 80 kN/mm2
- D. 10 kN/mm2 Discuss
- 8. Is air homogeneous or heterogeneous?
Options- A. homogeneous
- B. heterogeneous
- C. Both A & B
- D. None of the above Discuss
- 9. Work done in a free expansion process is
Options- A. Minimun
- B. 0
- C. Maximum
- D. None of the above Discuss
- 10. Which of the following is a renewable source of energy
Options- A. Natural gas
- B. Coal
- C. Wind
- D. Oil Discuss
Physics problems
Search Results
Correct Answer: Renewable
Explanation:
Many types of renewable energy resources such as wind and solar energy are constantly replenished and will never run out.
Correct Answer: Barometer
Explanation:
Air Pressure can be defined as the pressure of air in the earth's atmosphere. It reaches a maximum of about 100,000 Pa near sea level and decreases as altitude increases.
The barometer is an instrument which is used for measuring Air pressure.
Physics instruments and their uses:
Barkometer - - - Tanning liquors used in tanning leather
Bolometer - - - Electromagnetic radiation
Spectrometer - - - Properties of light.
Correct Answer: Unequal heating of different parts of the atmosphere
Correct Answer: C2H6O
Explanation:
is a Non-electrolyte.
An electrolyte is a compound that conducts an electric current when it is in an aqueous solution or melted. In order to conduct a current, a substance must contain mobile ions that can move from one electrode to the other. All ionic compounds are electrolytes. When ionic compounds dissolve, they break apart into ions which are then able to conduct a current ( conductivity ). Even insoluble ionic compounds such as CaCO 3 are electrolytes because they can conduct a current in the molten (melted) state.
A nonelectrolyte is a compound that does not conduct an electric current in either aqueous solution or in the molten state. Many molecular compounds, such as sugar or ethanol, are nonelectrolytes. When these compounds dissolve in water, they do not produce ions.
Electrolytes are of 3 types ---- Strong Electrolytes, Weak Electrolytes and Non Electrolytes.
Strong Electrolytes ---- Compounds which completely dissolves. ( NaCl, Na2Co3, HCl )
Weak Electrolytes ----- Compounds which do not completely dissolves.
Non Electrolytes ------ Compounds which do not dissolves at all.
Correct Answer: Longitudinal waves
Explanation:
Compressions and Rarefactions are characteristic of Longitudinal waves.
The direction of vibration of the particles is in the same plane as in which the wave is propagating. The particles vibrate back and forth, about their mean positions.
Correct Answer: Inner core
Explanation:
"Pressure" is the ratio of mass to area. So, for any given area, the one with more mass pressing on it will experience a higher pressure.
As you go more deeply into the atmosphere OR earth itself, you are putting more and more mass over you. For the same unit area therefore, the pressure, (mass/area) increases.
Hence, the lowest layer will always have the highest pressure i.e, inner core.
Correct Answer: 210 kN/mm2
Correct Answer: homogeneous
Explanation:
A Mixture is a material made up of two or more different substances which are mixed.
Mixtures can be either homogeneous or heterogeneous.
* A homogeneous mixture is a type of mixture in which the composition is uniform and every part of the solution has the same properties.
* A heterogeneous mixture is a type of mixture in which the components can be seen, as there are two or more phases present.
Air is a homogeneous mixture of the gaseous substances nitrogen, oxygen, and smaller amounts of other substances.
Correct Answer: 0
Explanation:
No work done as there is no external external pressure in free expansion.
Hence, Work done in a free expansion process is Zero.
Correct Answer: Wind
Explanation:
The energy sources that are constantly being replenished, such as sunlight, wind, and water. This means that we can use them as much as we want, and we do not have to worry about them running out. Additionally, renewable energy sources are usually much more environmentally friendly than fossil fuels. Overall, they release very few chemicals, like carbon dioxide, that can harm the environment.
Most of this energy comes from fossil fuels, such as coal, oil, and natural gas. These are nonrenewable energy sources, which means that if we use them all up, we can never get more during our lifetime. Fossil fuels also contribute greatly to global climate change by releasing carbon dioxide into the air when they are burned.
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