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Question: In electrophoresis, what determines the direction of ion movement?Options: Molecular weigh..
Question: Which of the following techniques can be used to identify metal cations in a solution?Opti..
Question: What is the primary principle behind ion chromatography?Options: Size exclusionIon exchang..
Question: In flame tests, which color is produced by the presence of sodium ions?Options: GreenRedYe..
Question: A 1 kg mass is dropped from a height of 10 m. What is the speed just before it hits the gr..
Question: A roller coaster starts from rest at a height of 50 m. What is its speed at the lowest poi..
Question: A pendulum swings from a height of 5 m. What is the speed at the lowest point of the swing..
Question: A block of mass 2 kg is released from a height of 10 m. What is its speed just before it h..
Question: A 10 kg object is moving with a speed of 3 m/s. If it comes to a stop, how much work is do..
Question: A 3 kg object is moving with a velocity of 4 m/s. What is its momentum?Options: 6 kg·m/s12..
Question: A 2 kg object is dropped from a height of 20 m. What is its speed just before it hits the ..
Question: What is the relationship between the units of energy and work?Options: They are the sameEn..
Question: Which of the following quantities is measured in Joules?Options: WorkPowerEnergyBoth Work ..
Question: Which of the following quantities has the dimension of [M^0 L^0 T^0]?Options: MassTimeLeng..
Question: In the measurement 2500 kg, how many significant figures are there?Options: 2341Correct An..
Question: How should the number 0.0001234 be rounded to two significant figures?Options: 0.000120.00..
Question: Which of the following operations will yield a result with the least number of significant..
Question: What is the result of dividing 150.0 by 3.00, considering significant figures?Options: 50...
Question: If a measurement is recorded as 0.00780 m, how many significant figures does it have?Optio..
Question: What is the correct way to express 0.000450 in scientific notation with significant figure..
Question: Which of the following numbers has three significant figures?Options: 0.00456123.410010.03..
Question: A measurement of a physical quantity is reported as 25.0 ± 0.5 units. What is the total un..
Question: In a physics experiment, the speed of an object is measured as 20.0 m/s with an uncertaint..
Question: A thermometer reads 100.0 °C with an uncertainty of ±0.5 °C. What is the range of possible..
Question: If the density of a substance is measured as 8.0 g/cm³ with an uncertainty of ±0.2 g/cm³, ..
Question: A length is measured as 15.0 m with an uncertainty of ±0.5 m. If this length is used to ca..
Question: In an experiment, the voltage is measured as 12.0 V with an uncertainty of ±0.3 V. What is..
Question: A student measures the time period of a pendulum as 2.0 s with an uncertainty of ±0.1 s. W..
Question: Which of the following is the correct conversion factor from kilometers to meters?Options:..
Question: What is the relationship between Celsius and Kelvin?Options: K = C + 273.15K = C - 273.15C..
