Major Competitive Exams
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Q. If 15 grams of sugar is dissolved in 250 mL of solution, what is the molarity of the solution? (Molar mass of sugar = 180 g/mol)
Q. If 15 grams of sugar is dissolved in 250 mL of water, what is the molarity of the solution? (Molar mass of sugar = 180 g/mol)
Q. If 15 is congruent to x modulo 6, what is the value of x?
Q. If 15 students can complete a project in 20 days, how many students are needed to complete it in 10 days?
Q. If 15 students like both History and Geography, 25 like History, and 20 like Geography, how many students like only Geography?
Q. If 2 moles of a gas occupy 44.8 L at STP, what is the molar volume of the gas?
Q. If 2 moles of an ideal gas at 300 K occupy a volume of 10 L, what is the pressure of the gas? (Use R = 0.0821 L·atm/(K·mol))
Q. If 2 moles of glucose are dissolved in 1 liter of water, what is the molarity of the solution?
Q. If 2 moles of KCl are dissolved in 1 liter of solution, what is the molarity of the solution?
Q. If 2 moles of NaCl are dissolved in 1 kg of water, what is the van 't Hoff factor (i)?
Q. If 2 pencils cost 50 cents, how much do 10 pencils cost?
Q. If 2(x - 3) = 4, what is the value of x?
Q. If 20 grams of glucose (C6H12O6) is dissolved in 1 liter of water, what is the molarity of the solution? (Molar mass of glucose = 180 g/mol) (2020) 2020
Q. If 20 grams of glucose (C6H12O6) is dissolved in 200 mL of solution, what is the mass percent concentration? (Molar mass of glucose = 180 g/mol)
Q. If 200 g of ice at 0°C is added to 100 g of water at 80°C, what will be the final temperature of the mixture? (Latent heat of fusion of ice = 334 J/g)
Q. If 200 g of water at 80°C is mixed with 300 g of water at 20°C, what will be the final temperature of the mixture? (Assume no heat loss to the surroundings)
Q. If 200 g of water at 80°C is mixed with 300 g of water at 20°C, what will be the final temperature of the mixture? (2019)
Q. If 200 J of heat is added to a system and 50 J of work is done by the system, what is the change in internal energy? (2023)
Q. If 200 J of heat is added to a system and 50 J of work is done by the system, what is the change in internal energy of the system?
Q. If 2000 J of heat is added to a system and 500 J of work is done by the system, what is the change in internal energy of the system? (2021)
Q. If 25% of a group like sports, 15% like music, and 5% like both, what percentage like either sports or music?
Q. If 25% of a group like tea, 15% like coffee, and 5% like both, what percentage like either tea or coffee?
Q. If 25% of a group like tea, 35% like coffee, and 10% like both, what percentage like only tea?
Q. If 25% of a group of 200 people are students and 10% of the students are part-time workers, how many part-time workers are there?
Q. If 25% of a group of 200 people like hiking, 15% like biking, and 5% like both, what percentage like either activity?
Q. If 25% of a group of 200 people like sports, 15% like music, and 5% like both, what percentage of people like only sports?
Q. If 25% of a group of 200 people like tea, 15% like coffee, and 5% like both, what percentage like only tea?
Q. If 25% of a population likes apples, 15% likes oranges, and 5% likes both, what percentage likes either fruit?
Q. If 25% of a population likes apples, 15% likes oranges, and 5% likes both, what percentage likes either apples or oranges?
Q. If 25% of a population likes apples, 35% likes oranges, and 10% likes both, what percentage likes only apples?
