Recent questions

If the vapour pressure at two temperatures of a solid phase in equilibrium with its liquid phase are known, then the latent heat of fusion can be calculated by the
A)-Maxwell’s equation
B)-Clayperon-Claussius equation
C)-Van Laar equation
D)-Nernst Heat Theorem

Voltaic cell can be recharged by:
A)-by addition of fresh solution
B)-by replacing external circuit with external source of electricity
C)-by removal of solution
D)-by heating it

Take (N_A) as the number of Anti-bonding molecular orbitals and (N_B) as the number of Bonding molecular orbitals. The molecule is stable when (N_A) _______(N_B)
A)-is greater than
B)- is equal to
C)-is less than
D)-is greater than or equal to

Fractional distillation can be used to separate components of air by:
A)-heating and applying pressure
B)-cooling and decreasing pressure
C)-cooling and increasing pressure
D)-heating and decreasing pressure

The simplest form of matter, that can be split into simpler substances by suitable chemical method is known as:
A)-compound
B)-element
C)-mixture
D)-dispersed phase

Which of the following alkene can exists as geometrical isomers?
A)-4-chloro-3-ethyl-3-hexene
B)-3-chloro-2-methyl-2-butene
C)-2,3-dichloro-2-pentene
D)-3-chloro-2-methyl-1-butene

When the concentration of reactant molecules is increased the rate of reaction increases the best explanation is:
A)-the average kinetic energy of molecules increases.
B)-the frequency of molecular collisions increases.
C)-the rate constant increases.
D)- the activation energy increases.

Substance that allow oil and water to mix, or emulsify, is known as_____
A)-Antioxidant
B)-Emulsifier
C)-mixtures
D)-preservative

Which of the following is not an example of a water-in-oil emulsion?
A)-Cod liver oil
B)- Butter
C)-Cold cream
D)-Milk

Which nanomaterial is used for cutting tools?
A)-Fullerene
B)-Aerogel
C)-Tungsten Carbide
D)-Gold

Tyndall effect is the property of colloids which does not depend on the charge on particles.

Which of the following is an example of a physical change?
A)- Mixing of baking soda and vinegar together to cause bubbles and foam.
B)- Falling of a glass cup from the counter and its shattering on the ground.
C)-Lighting a piece of paper on fire causing it to bum up and leave ashes.
D)-Baking a birthday cake for your mother.

Which of the following holds true according to the properties of hydrogen? I. Hydrogen is the lightest gas. II. Hydrogen cannot be corrosive. III. Deuterium is another name for heavy hydrogen.
A)-I only.
B)-III only
C)-I and II only
D)-I and III only

An element X is divalent and another element Y is tetravalent. The compound formed by these two elements will be:
A)-(XY)
B)-(XY_2)
C)-(X_2Y)
D)-(XY_4)

The nucleus of an atom was discovered by
A)-Rutherford's gold foil experiment
B)-J. J. Thomson's experiment
C)-Chadwick's experiment
D)-Milikan's oil drop experiment

Which among the following is paramagnetic compound?
A)-(N_2O)
B)-(NO)
C)-(N_2O_3)
D)-(N_2O_4)

Right to forest act is implemented in
A)-2007
B)-2008
C)-2009
D)-2010

Special type of farming done in Mizoram-
A)-Jhoom Farming
B)-Organic farming
C)-Primitive farming
D)-Plantation

What are the problems associated with construction of dams, roads and mining projects etc.?
A)-Pollution will increase
B)-The land will become barren
C)-Forest people and animals will lose their homes
D)-All of these

What is Cheraw? | Biology Questions
A)-A dance
B)-An animal
C)-A city
D)-A state