Class -X Science
Class X Science Quiz
Test your knowledge of chemistry and biology concepts with our engaging Class X Science Quiz! This quiz consists of 20 multiple-choice questions that challenge your understanding of essential scientific principles.
Are you ready to prove your expertise? Here are some highlights:
- Covering key topics in chemistry and biology
- Designed for Class X students
- Instant feedback on your answers
1. In a chemical equation, what is avoided ?
Words
Number of atoms
Formulae
Symbols
2.Which is true for an oxidation reaction ?
A. Addition of oxygen
B. Removal of oxygen
C. Removal of hydrogen molecule
D.Addition of hydrogen atom
3. Identify the double displacement reaction.
Hydrogen burns in air
Electrolysis of water
Digestion of food
Reaction between barium chloride and sulphuric acid
4.On heating copper powder in air, the surface of copper becomes black. It is
Combination reaction
Decomposition reaction
Dissociation reaction
Displacement reaction
5.Which of the following observation helps us to determine that a chemical change has taken place ?
Evolution of a gas
Change in color
Change in temperature
All of these
6.Which of the following is an endothermic process ?
Dilution of sulphuric acid
Burning of methane
Evaporation of water
Condensation of water vapours
7. Which of the following terms does not represent electrical power in a circuit?
I2R
IR2
VI
V2/R
8. What is the amount of current flowing through an electric press, if the amount of charge passing through a conductor in 10 minutes is 300 C?
30 A
0.3 A
0.5 A
5 A
9. An electrical appliance has a resistance of 25 Ω. When this electrical appliance is connected to a 230 V supply line, the current passing through it will be:
0.92 A
2.9 A
92 A
9.2 A
10. Keeping the potential difference constant, the resistance of the circuit is halved. The current will become:
One-fourth
Four times
Half
Doubled
11. Two appliances of rating 200 watt-250 volts and 100 watt-250 volts are joined in series to a 250 volts supply. Total power consumed in the circuit is
46 watt
67 watt
10 watt
30 watt
12. If the current flowing through a fixed resistor is halved, the heat produced in it will become:
One-fourth
Half
Doubled
Four times
13. A wire is stretched to double its length. What will be the the resistivity of the new wire?
Half
Double
One fourth
Remains same
14. Intestinal villi are mainly connected with
Secretion
Absorption
Assimilation
Ultra- filtration
15. Which organ secrets a chemical compound , which emulsifies fats and makes the food alkaline?
Liver
Pancreas
Stomach
Small intestine
16. The thinnest blood vessel in the body is a:
Vein
Venule
Capillary
Venacava
17. The food is transported in the phloem in the form of
Glucose
Sucrose
Fats
Amino acid
18. Anaerobic respiration takes place in:
Cytoplasm
Mitochondria
Both a and b
Outside cell
19. After strenuous exercise , what helps to repay the body's oxygen debt?
Eating
Stretching
Breathing
Thinking
20. The nitrogenous waste materials in humans is produced in
Liver
Kidney
Rectum
Urinary bladder
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