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- Question
Very small insoluble particles in a liquid may be separated from it by using
Options- A. crystallization
- B. fractional distillation
- C. centrifugation
- D. decantation
- Correct Answer
- centrifugation
ExplanationSometimes the solid particles in a liquid are very small and can pass through a filter paper. For such particles, the filtration technique cannot be used for separation. Such mixtures are separated by centrifugation.
- 1. Which one of the following is not related to wind erosion ?
Options- A. Wind gap
- B. Zeugen
- C. Dreikanter
- D. Demoiselle Discuss
- 2. Which one of the following statements is not correct?
Options- A. Position of the sun, Earth and Moon in a straight line of 180oangle is known as syzygy.
- B. Syzygy conjunction causes solar eclipse.
- C. Syzygy opposition causes lunar eclipse.
- D. Syzygy conjunction occurs at the time of perihelion only. Discuss
- 3. Which of the following statements concerning atmosphere of the Earth are correct? 1. In stratosphere, temperature increases with altitude. 2. In mesosphere, temperature decreases with altitude. 3. The lowest temperature of the atmosphere is recorded in the upper part of mesosphere. 4. Tropopause is an isothermal zone. Select the correct answer using the code given below.
Options- A. 1 and 2 only
- B. 1, 2 and 3 only
- C. 3 and 4 only
- D. 1, 2, 3 and 4 Discuss
- 4. The elemental composition of an adult human body by mass is
Options- A. C > O > H > N
- B. O >C >H > O
- C. N > C > O > H
- D. None Discuss
- 5. ?Altitude sickness? is caused at high altitude due to
Options- A. high partial pressure of oxygen
- B. low partial pressure of oxygen
- C. low level of haemoglobin
- D. high partial pressure of carbon dioxide Discuss
- 6. Marble comes under which category of rocks?
Options- A. Sedimentary
- B. Igneous
- C. Metamorphic
- D. None of these Discuss
- 7. The phenomena of raising the outer edge of the curved roads above the inner edge to provide necessary centripetal force to the vehicles to take a safe turn is called _____.
Options- A. banking of roads
- B. cornering of roads
- C. elevation of roads
- D. tempering of roads Discuss
- 8. Which one among the following stars is nearest to the earth?
Options- A. Sirius
- B. Arcturus
- C. Spica
- D. Proxima Centauri Discuss
- 9. Which of the following planets of our solar system has least mass?
Options- A. Neptune
- B. Jupiter
- C. Mars
- D. Mercury Discuss
- 10. Which one of the following States of India is not covered by Food Forecasting Stations set up by the Central Water Commission?
Options- A. Rajasthan
- B. Jammu and Kashmir
- C. Tripura
- D. Himachal Pradesh Discuss
General Science problems
Search Results
Correct Answer: Wind gap
Explanation:
Demoiselles
These are rock pillars which stand as resistant rocks above soft rocks as a result of differential erosion of hard and soft rocks.
Zeugen
A table-shaped area of rock found in arid and semi-arid areas formed when more resistant rock is reduced at a slower rate than softer rocks around it.
A Dreikanter
It is a type of ventifact that typically forms in desert or periglacial environments due to the abrasive action of blowing sand.
A wind gap is a gap through which a waterway once flowed that is now dry as a result of stream capture.
Correct Answer: Syzygy conjunction occurs at the time of perihelion only.
Explanation:
In astronomy, a syzygy is a straight-line configuration of three or more celestial bodies in a gravitational system.Solar and lunar eclipses occur at times of syzygy, as do transits and occultations.
Correct Answer: 1, 2, 3 and 4
Explanation:
In troposphere and mesosphere, temperature declines with increasing altitude. In stratosphere and thermosphere, temperature increases with increasing altitude.The coldest temperatures in Earth?s atmosphere occur at the top of mesosphere, the Mesopause, especially in the summer near the pole.Transitional layers of atmosphere include tropopause, stratopause, and mesopause. These layers are relatively thin and are located between major layers of atmosphere. These have contrasting thermal properties. Hence, in these layers there is no change in temperature with change in altitude.
Correct Answer: O >C >H > O
Explanation:
Correct Answer: low partial pressure of oxygen
Explanation:
Altitude sickness, the mildest form being acute mountain sickness (AMS), is the negative health effect of high altitude, caused by rapid exposure to low amounts of oxygen at high elevation.
Correct Answer: Metamorphic
Correct Answer: banking of roads
Correct Answer: Proxima Centauri
Explanation:
Proxima Centauri is the nearest star, and on August 24, 2016 astronomers announced it likely has a planet. This star is the nearest of a triple star system, which we on Earth see with the eye alone as the single star Alpha Centauri, visible from Earth's Southern Hemisphere
Correct Answer: Mercury
Explanation:
Correct Answer: Himachal Pradesh
Explanation:
Presently, there are 226 flood forecasting stations consisting of 166 level forecasting stations for villages and towns and 60 inflow forecasting stations for reservoirs/dams/barrages in the country. Existing flood forecasting network covers 22 States / Union Territories and 19 major river basins / sub-basins in the country.
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