Earth Science MCQs (Part 20 of 21)

  1. Which one of the following is not a good reservoir rock for petroleum?

    1. limestone

    2. sandstone

    3. mudstone

    4. reef boundstone

  2. Which one of the following features is absent at the source region, if quartz grains along with fresh, angular to subrounded grains of feldspar are present in sandstone?

    1. rapid erosion

    2. tectonic activity

    3. chemical weathering

    4. physical weathering

  3. Which one of the following is the correct sequence of bedforms generated in sand (>0.6 mm in size) with increasing flow velocity?

    1. no movement? lr plane bed > ripple > upper plane bed > Antidune

    2. no movement > ripples > dunes > upper plane bed > Antidunes

    3. no movement > lower plane beds > dunes > upper plane bed > Antidune

    4. no movement > dunes > ripples > up flat bed > Antidune

  4. Which one of the following types of grain contacts indicates the highest burial depth of sediments?

    1. point contact

    2. sutured contact

    3. long contact

    4. concavo-convex contact

  5. Weathering of feldspar minerals may result in which one of the following sets of products?

    1. clays; Ca, Na, K ions; dissolved silica

    2. iron oxides; Ca, Fe, Mg, Mn ions; clays: Dissolved silica

    3. Fe, Mg ions; Mn oxides; clays

    4. Na, K, Mg, Fe ions; clays; Fe-Mn oxides

  6. In the troposphere, core of maximum zonal wind speed is called

    1. storm track

    2. strong westerly

    3. mean jet stream axis

    4. westerly flow

  7. Violent updrafts in thunderstorm indicate that a tremendous amount of energy is being released. A measure of this amount of energy available to create such motion is

    1. kinetic energy

    2. potential energy

    3. convective available potential energy

    4. convective instability

  8. Fronts are defined by their temperature structure, although many other quantities change across the front. Advancing cold air at the surface defines the cold front, where the front moves towards the warm air mass. Refreshing cold air, where the front moves towards the cold air mass is called

    1. colder front

    2. warm front

    3. warmer front

    4. stationary front

  9. When water vapour condenses in the clouds, latent heat is released. This heat warms the air in the column, causing it to expand. According to the hypsometric equation, horizontal pressure gradients develop which push the air out of the column. Hence which of the following is correct?

    1. It will increase the sea level pressure in the column

    2. It will decrease the sea level pressure in the column

    3. Sea level pressure will remain same

    4. No change in pressure gradient

  10. The earth is heated by sun, and is cooled by long wave (IR) radiation to space. If A is global albedo, S solar constant, R earth's radius, s Stefan Boltzmann constant and T radiation emission temperature, then which one of the following is correct?

    1. Radiation in = A. S. pR2 Radiation out = sT4.4pr2

    2. Radiation in = A. S. pR2 Radiation out = s. T4. pR2

    3. Radiation in = (1 − A). S. p R2 Radiation out = s. T4.4pR2

    4. Radiation in = (1 − A) S. 4pR2 Radiation out = s. T4.4pR2