Final Preparations Trial Test # 1- VANDA 2025

Which of the following conditions enables heat to flow from one body to another identical body?

• The difference in the temperatures of the two bodies
• The difference in the pressures exerted on the two bodies
• The difference in the densities of the two bodies
• The difference in the sizes of the two bodies

Which of the following is the best thing to do during heavy lightning?

• Lying on the ground in an open place.
• Going into the nearest water body.
• Staying indoors away from metallic doors or windows.
• Standing under a tall tree.

Which of the following statements is true about convection?

• In solids, heat is transferred only by convection.
• Convection occurs in cold liquids.
• Convection requires a medium for transmission.
• Heat flows from the cold end to the hot end in a substance.

Identify the group of neutral substances: P. Common salt solution, mustard oil, oxygen, carbon dioxide Q. Sugar solution, apple juice, oxygen, nitrogen R. Glucose solution, kerosene, petrol, oxygen S. Salt solution, mustard oil, lime water, nitrogen

• P
• Q
• R and S
• R

Based on the given information, which statement is true about the importance of soil to plants?(i) Soil supplies plants with food(ii) Soil supplies plants with minerals(iii) Soil supplies plants with air and water

• (i) only
• (ii) and (iii) only
• (i) and (ii) only
• (i), (ii) and (iii)

Complete the following sentence.When the two terminals of a cell are connected directly with a wire, then ______________.

• More electrical energy is stored in the cell
• The chemicals get used up very fast
• No current flows
• The cell explodes

Study the reaction given below. What kind of change takes place in the given reaction? Copper sulphate (soln.) + Iron → Iron sulphate (soln.) + Copper

• Chemical change
• Physical change
• Biochemical
• Both a and b

The figure given below shows a part of the human alimentary canal.Which of the two labelled structures produce substances involved in the conversion of fats into fatty acids and glycerol?

• J and K
• J and N
• K and L
• L and M

Which of the following statements is correct about the given changes? (i) Drawing copper into a wire (ii) Breaking of a glass (iii) Heating an iron nail till red hot (iv) Inflating a basketball

• (i) and (ii) are chemical changes while (iii) and (iv) are physical changes.
• (ii) and (iii) are chemical changes while (i) and (iv) are physical changes.
• All are physical changes.
• All are chemical changes.

Which of the following are the characteristics of enzymes?

• Substances which are broken into simpler substances during digestion.
• Substances which are made by the combination of carbohydrates.
• Substances which break complex food molecules into simpler food molecules.
• Substances which break complex substances and they themselves undergo dissociation reactions.