Please wait...

CDS - Science PYSP Test 1406
Menu grid icon
Result Result point icon
CDS - Science PYSP Test 1406
  • Goals icon

    /

    Score
  • Trophy icon

    -

    Rank
White alarm icon Time Taken: -
Result frame illustration
  • Question 1/10
    1 / -0.33
    Which of the following causes adiabatic temperature changes in atmosphere?
    Solutions
    Application of temperature changes in the atmosphere is in adiabatics, or temperature change which are caused by compressing or allowing air to expand. 
    Adiabatic temperature change of air occurs without the addition or removal of energy. That is, there is no exchange of heat with the surrounding environment to cause the cooling or heating of the air.

    Hence, option C is correct.

  • Question 2/10
    1 / -0.33
    Working of safety fuses depends upon
    1) Magnetic effect of the current
    2) Chemical effect of the current
    3) The magnitude of the current
    4) Heating effect of the current
    Select the correct answer using the code given below.
    Solutions

    An electric fuse is a device which is used to limit the current in an electric circuit. The fuse safeguards the circuit and the electrical appliances from being damaged.
    The fuse wire is generally an alloy of lead and tin. It has a low melting point and breaks the circuit if the current exceeds a safe value.
    The thickness and length of the fuse wire depends on the maximum current allowed through the circuit.
    It is connected in series in the beginning of the electric circuits.
    If too many electrical appliances of high power rating (like electric iron, water heater etc) are switched on at the same time, they draw an extremely large current from the circuit. This condition is called overloading and it can cause overheating of the wiring and lead to a fire. (heating effect and magnitude of the current)

    Hence, option C is correct

  • Question 3/10
    1 / -0.33
    Consider the following statements.
    1) There is no net moment on a body which is in equilibrium
    2) The momentum of a body is always conserved
    3) The kinetic energy of an object is always conserved.
    Which of the statements given above is/are correct?
    Solutions

    There are two conditions that must be met for an object to be in equilibrium. The first condition is that the net force on the object must be zero for the object to be in equilibrium. If net force is zero, then net force along any direction is zero.
    Kinetic energy (KE) is the energy of motion, and kinetic energy is not always conserved in a collision
    Energy and momentum are always conserved.

    Hence, option C is correct

  • Question 4/10
    1 / -0.33
    Consider the following chemical reaction:
    aFe2O3(s) + bCO(g) → cFe(s) + dCO2
    In the balanced chemical equation of the above, which of the following will be the values of the coefficients a, b, c and d respectively?
    Solutions
    Fe2O3 + 3CO = 2Fe + 3CO2
    Hematite + Carbon Monoxide = Iron + Carbon Dioxide
    In this reaction, the iron oxide is reduced to iron, and the carbon is oxidised to carbon dioxide. Hence, option B is correct
  • Question 5/10
    1 / -0.33
    Which one of the following elements is essential for the formation of chlorophyll in green plants?
    Solutions
    Magnesium is essential for the formation of chlorophyll in green plants. Without magnesium, chlorophyll cannot capture sun energy needed for photosynthesis. In short, magnesium is required to give leaves their green color.  

    Hence, option C is correct

  • Question 6/10
    1 / -0.33
    Which one of the following gases dissolve in water to give the acidic solution?
    Solutions
    Carbon dioxide (CO2) gas dissolved in water can cause water to become acidic.
    The acidity of water from dissolved CO2 can be reduced by a base such as baking soda (sodium bicarbonate). 

    Hence, option A is correct

  • Question 7/10
    1 / -0.33
    Which one of the following elements is involved in the water control of the blood?
    Solutions
    Aldosterone is a key steroid hormone critical for maintaining salt and water balance. It regulates the concentration of minerals, like sodium and potassium, in the fluid outside your cells.
    When your sodium levels drop, or potassium levels rise, your body signals your adrenal glands to release aldosterone into your blood.
    Aldosterone signals your kidneys to reabsorb sodium into the blood, and acts on your sweat glands to reduce sodium loss through sweat. Hence, option A is correct
  • Question 8/10
    1 / -0.33
    Lysosome is formed from which of the following cell organelles?
    Solutions
    • Lysosomes are spherical membranous sacs of enzymes.
    • The lysosome membrane helps to keep its internal compartment acidic and separates the digestive enzymes from the rest of the cell.
    • Lysosomes are formed by budding from the Golgi complex. 

    Hence, option C is correct

  • Question 9/10
    1 / -0.33
    Which one of the following pairs about organ/part that helps in locomotion is not correctly matched?
    Solutions
    Euglena move by a flagellum (plural ‚ flagella), which is a long whip-like structure that acts like a little motor.
    The paramecium uses its cilia to sweep the food along with some water into the cell mouth after it falls into the oral groove.
    The underside of the starfish is covered with hundreds of tube feet, which it uses for walking around, for attaching tightly to rocks, and for holding on to prey.
    Nereis possess setae and parapodia for locomotion 

    Hence, option C is correct

  • Question 10/10
    1 / -0.33
    In which one of the following types of connective tissues in animals does fat get stored?
    Solutions


    • Adipocytes are the major source of leptin production, and plasma leptin concentrations directly correlate with the amount of total body fat.

    • Adipocytes are highly specialized cells that play a crucial role in the energy balance of most vertebrates.

    • Adipocytes convert excess energy to tri-acylglycerol and deposit it during feeding in preparation for periods of food deprivation.

    • Adipocytes may become enlarged by increased fat storage.


    Hence, option A is correct

Close button icon
User Profile
-

Correct (-)

Wrong (-)

Skipped (-)

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
Mockers logo Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Arrow pointer icon
Click on Allow to receive notifications
Notification bell icon ×
Open Now