Sachita has categorised the processes
(I-IV) into different types of changes given in the box :
I. Ripening of crops - 1, 2
II. Occurrence of day and night - 5, 6
III. Volcanic eruption - 2, 4
IV. Deposition of dry ice - 3, 6
Select the incorrect classification.
AI and III only
BIII and IV only
CII and IV only
DNone of these
Study the given figure carefully. What will happen to the water level in the tub when some air is sucked out of the glass?
AWater level in the tub will go down.
BWater level in the tub will rise.
CBubbles will appear in the tub.
DWater level in the tub will remain the same.
Read the given paragraph carefully and select the option which correctly fill the blanks (i-iv). Earthquakes are sudden tremors caused due to the disturbances within the Earth's __(i)__ due to rubbing of __(ii)__ against each other. __(iii)__ is used to record intensity, direction and duration of earthquakes while __(iv)__ is used to measure the magnitude of earthquake.
|A||Core||Techtonic plates||Richter scale||Seismogram|
|B||Mantle||Techtonic plates||Seismogram||Richter scale|
|C||Crust||Techtonic plates||Seismogram||Richter scale|
|D||Crust||Techtonic plates||Richter scale||Seismogram|
Rima found that the copper vessels in her house have lost their shine and become dull in appearance. What reason would you give Rima for this?
(I) Some metals lose their shine because of the action of air.
(II) Some metals lose their shine because of the action of moisture on them.
CBoth (I) and (II)
DNone of these