Question : Which of the following properties of sound is affected by a change in air temperature?

Option 1: Frequency

Option 2: Intensity

Option 3: Amplitude

Option 4: Wavelength

Question : What is the full form of ALU?

Option 1: Alternative Logic Unit

Option 2: Arithmetic Logic Unit

Option 3: Arithmetic Least Unit

Option 4: Arithmetic Local Unit

Question : In which of the soil conservation methods in the coastal and dry regions, rows of trees are planted to check the wind movement to protect soil cover?

Option 1: Mulching

Option 2: Shelter belts

Option 3: Rock dam

Option 4: Contour barriers

Question : Transpiration increases in:

Option 1: hot, dry, and windy condition

Option 2: hot, damp, and windy condition

Option 3: cool, damp, and windy condition

Option 4: cool, dry, and still condition

Question : The point $R(a,b)$ is first reflected over the origin to $R_1$ and $R_1$ is reflected over the X-axis to (–4, 2). The coordinates of point $R$ are:

Option 1: (–4, –2)

Option 2: (–4, 2)

Option 3: (4, 2)

Option 4: (4, –2)