List of practice Questions

Consider a layer of atmosphere where temperature increases with height. If the concentration of a vertically well-mixed greenhouse gas suddenly increases in this layer, then an immediate consequence is that:
Consider an atmosphere where the mole fractions of \( N_2 \), \( Ar \), and \( CO_2 \) are \( 7.81 \times 10^{-1} \), \( 9.34 \times 10^{-3} \), and \( 4.05 \times 10^{-4} \), respectively. This atmosphere exchanges gases with sea water below having temperature and salinity of 20°C and 35 psu, respectively. In the absence of biological and chemical activity, relative concentrations of dissolved gases in the surface sea water at equilibrium are ordered as:
Gravitational forces exerted by the Sun and the Moon are mainly responsible for ocean tides. Which of the following statement(s) regarding ocean tides is/are correct?
Which of the following statement(s) is/are true about northern hemisphere tropical cyclones?
The figure shows a schematic of vertical profiles of concentrations of two gases P and Q in the atmosphere near a coastal station. The correct pair representing P and Q, respectively, is
A form of momentum equation for an incompressible fluid is
\[ \rho \frac{D \mathbf{V}}{Dt} = -\nabla p + \mu \nabla^2 \mathbf{V} + \mathbf{B} \] where \( \rho \) is density, \( \mathbf{V} \) is velocity, \( t \) is time, \( p \) is pressure, \( \mu \) is viscosity, and \( \mathbf{B} \) represents body force per unit volume. The dimension of term (iii) is:
Tropical cyclones usually do not form close to the Equator primarily because
Which one of the following statements regarding equatorial undercurrent (EUC) in the Pacific Ocean is correct?
Which one of the following statements is correct regarding the dominant energy balance in the troposphere in a tropical convergence zone?
Which one of the following processes is primarily responsible for the poleward transport of energy in the midlatitude troposphere?
Which of the following feature(s) characterize the seasonal mean flow in the upper troposphere near 200 hPa level over the Tibetan Plateau during the boreal summer?
Which among the following statements are true with respect to protein denaturation?
Identify the correct pair(s) of milling equipment and the grain for which it is used.
Which among the following expression(s) is/are correct?
In sieve analysis of coffee powder, the particle size distribution is given below:
The Sauter mean diameter (in µm) of the coffee powder is _________ (round off to one decimal place).
In a dairy processing plant, milk enters a 30 m long and 2 cm diameter tube at 60°C and leaves at 57°C. The total heat loss over the tube length is 381.15 W. The specific heat capacity, density, and viscosity of milk are 3.85 kJ kg$^{-1}$ K$^{-1}$, 1020 kg m$^{-3}$, and 1.20 cP, respectively. The Reynolds number for the flow is _________ (rounded off to the nearest integer). Given: Acceleration of gravity \( g = 9.81 \ \text{m/s}^2 \) and \( \pi = 3.14 \)

Apple juice flows through a steel pipe having thermal conductivity of 50 W \(m^{-1} \text{K}^{-1} \). The outer surface of the pipe is exposed to ambient environment. The inside diameter and thickness of the pipe are 3 cm and 1.5 cm, respectively. The overall heat transfer coefficient based on inside area is 25 W\( m^{-2} \text{K}^{-1}\). If the internal convective heat transfer coefficient is 30 W \(m^{-2} \text{K}^{-1}\), the external convective heat transfer coefficient (in W \(m^{-2} \text{K}^{-1} \textbf{}\) ) Will be _________ (round off to two decimal places).}

The dry bulb temperature and relative humidity of air inside a storage chamber are 37°C and 50%, respectively. The saturation pressure of water vapour at 37°C and barometric pressure are 6.28 kPa and 101.32 kPa, respectively. The humidity ratio of air inside the chamber is _________ \text{ kg water / kg dry air}. (Round off to three decimal places.)
The radius of a centrifuge bowl is 0.1 m and is rotating at 850 revolutions per minute. The centrifugal force developed in terms of gravity force (g-force) is _________ (round off to two decimal places). Given: Acceleration of gravity (g) = 9.81 m/s$^2$ and $\pi = 3.14$
Match the edible oil refining stages given in Column I with their respective functions in Column II
Make the correct pair of food packaging technology given in Column I with operating principle or description in Column II
Which of the following is not a caramel flavour producing compound?
Match the size reduction equipment in Column I with the method of operation in Column II:
Most commonly used refrigerant in direct immersion freezing of food is
Which among the following are \(\omega\)-6 polyunsaturated essential fatty acids?