Chemistry
Grade-10
Easy
Question
The total number of elements discovered till date is-
- 111
- 95
- 118
- 67
Hint:
number of elements in periodic table.
The correct answer is: 118
The correct answer is 118 elements as in periodic table we can observe all the 118 elements.
Related Questions to study
Chemistry
In which state do metals exist at room temperature?
In which state do metals exist at room temperature?
ChemistryGrade-10
Chemistry
Choose the correct option denoting a non-metal.
Choose the correct option denoting a non-metal.
ChemistryGrade-10
Chemistry
The property of metals by means of which they can conduct electricity and heat easily is termed as-
The property of metals by means of which they can conduct electricity and heat easily is termed as-
ChemistryGrade-10
Biology
Which of the following are examples of structural adaptation?
Which of the following are examples of structural adaptation?
BiologyGrade-10
Biology
When living organisms make certain changes in their body parts, it is called _______________.
When living organisms make certain changes in their body parts, it is called _______________.
BiologyGrade-10
Biology
Adaptation can be ________________.
Adaptation can be ________________.
BiologyGrade-10
Biology
When living organisms make changes according to their environment, it is called ________________.
When living organisms make changes according to their environment, it is called ________________.
BiologyGrade-10
Physics
Law of conservation of momentum states that the sum of momenta of the two objects before collision is equal to the sum of momenta after the collision provided there is no external unbalanced force acting on them
Is the statement true or false?
Law of conservation of momentum states that the sum of momenta of the two objects before collision is equal to the sum of momenta after the collision provided there is no external unbalanced force acting on them
Is the statement true or false?
PhysicsGrade-10
Physics
The mass of the colliding bodies after and before collision is same. Is the statement true or false?
The mass of the colliding bodies after and before collision is same. Is the statement true or false?
PhysicsGrade-10
Physics
As a bullet travels through the air, it slows down due to air resistance. How does the bullet’s momentum change as a result?
As a bullet travels through the air, it slows down due to air resistance. How does the bullet’s momentum change as a result?
PhysicsGrade-10
Physics
There are two cars, car A and car B. Mass of car A is 3000 kg, travelling at 30 m/s collide with car B of mass 2000 kg travelling at 10 m/s in same direction. After collision, the velocity of car A becomes 60 m/s. Calculate the velocity of car B after the collision?
There are two cars, car A and car B. Mass of car A is 3000 kg, travelling at 30 m/s collide with car B of mass 2000 kg travelling at 10 m/s in same direction. After collision, the velocity of car A becomes 60 m/s. Calculate the velocity of car B after the collision?
PhysicsGrade-10
Physics
There are two cars, car A and car B. Mass of car A is 3000 kg, travelling at 40 m/s collide with car B of mass 4000 kg travelling at 20 m/s in same direction. After collision, the velocity of car A becomes 50 m/s. Calculate the velocity of car B after the collision?
There are two cars, car A and car B. Mass of car A is 3000 kg, travelling at 40 m/s collide with car B of mass 4000 kg travelling at 20 m/s in same direction. After collision, the velocity of car A becomes 50 m/s. Calculate the velocity of car B after the collision?
PhysicsGrade-10
Physics
A 3,000 kg truck moving at +15 m/s hits a bus 1,000 kg moving at +10 m/s in the same direction. What is the approximate velocity of the truck if the final velocity of the bus becomes 8 m/s.
A 3,000 kg truck moving at +15 m/s hits a bus 1,000 kg moving at +10 m/s in the same direction. What is the approximate velocity of the truck if the final velocity of the bus becomes 8 m/s.
PhysicsGrade-10
Physics
Mass of the blue ball is 0.88 Kg and mass of the pink ball is 1.50 kg
The following example follows law of conservation of momentum.
Is the statement true or false?
Initial:
Final:
Mass of the blue ball is 0.88 Kg and mass of the pink ball is 1.50 kg
The following example follows law of conservation of momentum.
Is the statement true or false?
Initial:
Final:
PhysicsGrade-10
Physics
Mass of the blue ball is 0.88 Kg and mass of the pink ball is 1.50 kg
The following example follows law of conservation of momentum.
Is the statement true or false?
Initial:
Final:
Mass of the blue ball is 0.88 Kg and mass of the pink ball is 1.50 kg
The following example follows law of conservation of momentum.
Is the statement true or false?
Initial:
Final:
PhysicsGrade-10
