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All Important Questions and Answers for NEET Exam

Preparing for the NEET exam requires a deep understanding of various subjects including Physics, Chemistry, and Biology. Here are some important questions and answers that can help you in your preparation:

Physics:

1. Question: What is the difference between scalar and vector quantities?

Answer: Scalar quantities have only magnitude, while vector quantities have both magnitude and direction.

2. Question: Define Newton's First Law of Motion.

Answer: Newton's First Law states that an object remains at rest or in uniform motion unless acted upon by an external force.

3. Question: What is the formula for calculating work done?

Answer: The formula for work done (W) is given by W = F d cos(θ), where F is the force applied, d is the displacement, and θ is the angle between the force and displacement vectors.

4. Question: Define Ohm's Law.

Answer: Ohm's Law states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points, given a constant temperature.

5. Question: What is the SI unit of electric charge?

Answer: The SI unit of electric charge is the Coulomb (C).

Chemistry:

1. Question: Define a chemical bond.

Answer: A chemical bond is a force that holds atoms together in a molecule or compound.

2. Question: What is Avogadro's Law?

Answer: Avogadro's Law states that equal volumes of gases, at the same temperature and pressure, contain equal numbers of molecules.

3. Question: What is the difference between an exothermic and endothermic reaction?

Answer: In an exothermic reaction, energy is released to the surroundings, while in an endothermic reaction, energy is absorbed from the surroundings.

4. Question: Define a catalyst.

Answer: A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the reaction.

5. Question: What is the pH scale?

Answer: The pH scale is a measure of the acidity or basicity of a solution, ranging from 0 to 14, with 7 being neutral, values less than 7 indicating acidity, and values greater than 7 indicating basicity.

Biology:

1. Question: What is the function of the mitochondria?

Answer: The mitochondria are the powerhouses of the cell, responsible for producing energy in the form of ATP through cellular respiration.

2. Question: Define osmosis.

Answer: Osmosis is the movement of water molecules across a semi-permeable membrane from a region of lower solute concentration to a region of higher solute concentration.

3. Question: What is the function of the chloroplast?

Answer: The chloroplast is the site of photosynthesis in plant cells, where light energy is converted into chemical energy in the form of glucose.

4. Question: Define meiosis.

Answer: Meiosis is a type of cell division that produces gametes (sperm and egg cells) with half the number of chromosomes as the parent cell, resulting in genetic diversity.

5. Question: What is the function of the circulatory system?

Answer: The circulatory system transports oxygen, nutrients, hormones, and waste products throughout the body, facilitating gas exchange and nutrient delivery to cells.

These questions cover some fundamental concepts in Physics, Chemistry, and Biology that are important for the NEET exam. Make sure to thoroughly understand these concepts and practice solving related problems to ace your exam.

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