List of top Science Questions asked in UP Board

Homologous series among the following is:
The bond in diatomic molecule of Nitrogen is:
Unsaturated hydrocarbon from the following is:
A six carbon molecule, Glucose is broken down into a three carbon molecule, Pyruvate. This process takes place:
Dialysis is related to:
Two coils of copper wire are placed closer to each other. Due to change in the value of current in one coil, current starts to flow in the other coil. Reason for this phenomenon is -
Two resistances each of 10 ohm are connected in parallel. A battery of 10 V is connected with this combination. Amount of charge flowing per second will be -
Chemical reaction:
\text{Fe(s) + CuSO}_4\text{(aq)} \rightarrow \text{FeSO}_4\text{(aq)} + \text{Cu(s)}
What type of reaction is this?
Complete the following chemical equation:
\(\underline{\hspace{2cm}}\) + CO_2 \rightarrow \text{CaCO}_3 + \text{H}_2\text{O}
Match the physical quantities given in Column A with the units given in Column B and choose the correct option:
\[\begin{array}{|c|c|} \hline Column A & Column B \\ \hline \text{(1) Electrical resistivity} & \text{(i) Coulomb} \\ \hline \text{(2) Electric potential difference} & \text{(ii) Watt-hour} \\ \hline \text{(3) Electrical energy} & \text{(iii) Joule per coulomb} \\ \hline \text{(4) Electric charge} & \text{(iv) Ohm-meter} \\ \hline \end{array}\]
Range of clear vision of a normal eye is -
An object is placed on the axis of a concave lens of focal length 20 cm. Image is formed at a distance of 30 cm from the lens. The distance of object from lens will be -
A lemon placed in a beaker full of water appears larger than its real size, when viewed sideways. The light phenomenon responsible is -
Image of an object formed by a concave mirror is real and of the size of the object. The object is placed -

Write notes on the following: 
(a) Saturated and unsaturated hydrocarbons 
(b) Corrosion 
(c) Precipitation reaction

Match the Chemical Substances with Their Applications

Column A

a. Acetic acid

b. Ethanol

c. Caustic soda

d. Detergents

Column B

i. In the formation of soap

ii. In making denatured spirit

iii. In the formation of vinegar

iv. In cleaning clothes

Tally of Substances and Their Applications

Given Substances in Column A:

a. Plaster of Paris

b. Caustic soda

c. Sodium bicarbonate

d. Bleaching powder

Applications in Column B:

i. Formation of soap

ii. Antibacterial

iii. Formation of an idol

iv. Used for bleaching

Crossing between long pea plants ( \(\text{LL}\)) and dwarf plants ( \(\text{tt}\)) shall yield the following generation:

Write characteristics of modern periodic table.
Write chemical equation for obtaining mercury from cinnabar.

Write one main function of Xylem in plants.
In which organ of the body is Copper replaced?
On which plant did Mendel perform his experiment?
Give examples of homologous organs.
Describe double circulation in human beings.
Write short notes on the following:

Conservation of natural resources
Regeneration
Describe the structure of the nephron in the kidney. How does it function?
Write short notes on the following:

Autotrophic nutrition
Transpiration
Chipko movement