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Assertion (A): A compass needle is placed near a current carrying wire. The deflection of the compass needle decreases when the magnitude of the current in the wire is increased. Reason (R): The strength of a magnetic field at a point near the conductor increases on increasing the current.
A current carrying conductor produces a magnetic field around it. When the magnitude of current increases, the strength of the magnetic field also increases. This results in greater deflection of the compass needle. However, the assertion wrongly claims that deflection decreases, while the reason isRead more
A current carrying conductor produces a magnetic field around it. When the magnitude of current increases, the strength of the magnetic field also increases. This results in greater deflection of the compass needle. However, the assertion wrongly claims that deflection decreases, while the reason is scientifically correct. Thus, the correct answer is D. Assertion is false but Reason is true.
See lessAssertion (A): Biodegradable substances result in the formation of compost and natural replenishment. Reason (R): It is due to breakdown of complex inorganic substances into simple organic substances.
Biodegradable substances such as kitchen waste, dead plants, or paper break down naturally by microbes into simpler organic matter. This organic material turns into compost, enriching the soil. The assertion is correct, but the reason wrongly states "inorganic substances" instead of "organic substanRead more
Biodegradable substances such as kitchen waste, dead plants, or paper break down naturally by microbes into simpler organic matter. This organic material turns into compost, enriching the soil. The assertion is correct, but the reason wrongly states “inorganic substances” instead of “organic substances.” Hence, the correct option is C. Assertion true but Reason false.
See lessDil. HCl is added to Zn granules. How will you prove that chemical change has taken place here? Support your response with two arguments.
When dilute hydrochloric acid reacts with zinc granules, effervescence occurs due to the release of hydrogen gas, which can be tested by a pop sound. Additionally, zinc chloride solution is formed, different from the original reactants. The formation of new substances and energy release confirm thatRead more
When dilute hydrochloric acid reacts with zinc granules, effervescence occurs due to the release of hydrogen gas, which can be tested by a pop sound. Additionally, zinc chloride solution is formed, different from the original reactants. The formation of new substances and energy release confirm that a chemical change has occurred, supported by both visible gas evolution and compound formation.
See lessState the post-fertilisation changes that lead to fruit formation in plants.
Post-fertilisation, the zygote formed in the ovule develops into an embryo. The ovules mature into seeds, while the ovary enlarges and transforms into a fruit, enclosing the seeds. Other floral parts like petals and sepals usually dry and fall off. This sequence of changes ensures seed protection, dRead more
Post-fertilisation, the zygote formed in the ovule develops into an embryo. The ovules mature into seeds, while the ovary enlarges and transforms into a fruit, enclosing the seeds. Other floral parts like petals and sepals usually dry and fall off. This sequence of changes ensures seed protection, dispersal, and continuation of the plant species through fruit formation.
See lessWhat is the purpose of making urine in the human body? Name the organs that stores and releases the urine.
Urine formation helps in excretion by removing harmful nitrogenous wastes like urea, uric acid, and excess water. This process maintains the body’s chemical balance and prevents accumulation of toxins. Urine is stored in the urinary bladder until excretion, and when the bladder contracts, it is releRead more
Urine formation helps in excretion by removing harmful nitrogenous wastes like urea, uric acid, and excess water. This process maintains the body’s chemical balance and prevents accumulation of toxins. Urine is stored in the urinary bladder until excretion, and when the bladder contracts, it is released out of the body through the urethra. This ensures proper waste removal and homeostasis.
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