He is good and explains well per the student requirement. Overall experience was posituve and interactive.
Here is a Sample Worksheet for you to Practice. Download this worksheet to see the answers.
Two identical heating elements, each having resistance R, are connected first in series and then in parallel across the same ideal battery. The ratio of heat produced in the parallel arrangement to the series arrangement in the same time is:
1: 1
2.2: 1
3.4: 1
4.1: 4
An object is placed 20 cm in front of a convex lens having a focal length of 15 cm. The image formed is:
Virtual, erect and magnified
2.Real, inverted and magnified
3.Real, inverted and diminished
4.Virtual, erect and diminished
Which statement correctly explains why ethene (C₂H₄) undergoes an addition reaction but ethane (C₂H₆) generally does not?
Ethene contains an ionic bond
2.Ethene contains a carbon-carbon double bond that can open during addition
3.Ethane contains oxygen atoms
4.Ethane has fewer carbon atoms than ethene
An iron nail is placed separately in solutions of CuSO₄, ZnSO₄ and AgNO₃. In which solutions will a displacement reaction occur?
Only CuSO?
2.Only AgNO?
3.CuSO? and AgNO?
4.ZnSO? and CuSO?
A solution has a pH of 3, while another solution has a pH of 5. Compared with the second solution, the hydrogen ion concentration of the first solution is:
2 times greater
2.10 times greater
3.100 times greater
4.1000 times greater
A student adds zinc granules to dilute hydrochloric acid. Which observation and chemical equation are correct?
Brown gas is evolved; Zn + HCl → ZnCl? + H?
2.Colourless gas is evolved; Zn + 2HCl → ZnCl? + H?
3.No gas is evolved; Zn + HCl → ZnCl + H?
4.Green gas is evolved; Zn + 2HCl → ZnCl? + H?
Which statement correctly explains why the left ventricle has a thicker muscular wall than the right ventricle?
It receives oxygenated blood from the lungs
2.It pumps blood to the entire body
3.It pumps blood only to the lungs
4.It prevents mixing of oxygenated and deoxygenated blood
During vigorous exercise, muscle cells may produce lactic acid because:
Oxygen supply becomes insufficient for complete oxidation of glucose
2.Glucose cannot enter muscle cells
3.Carbon dioxide is not produced
4.Mitochondria stop functioning permanently
समास कितने प्रकार के होते है?
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2.??
3.???
4.??
The symbol π (3.14...) was made popular by?
Sheldon Cooper
2.Leonhard Euler
3.Leonard Hofstadter
4.Raj Koothrappali
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