**Find the odd one out:**

Concept: Effects of Electric Current > Magnetic Effect of Electric Current

You can see your image in polished floors, but not in wooden table because ______.

Concept: Formation of Image by Reflection: Real and Virtual Image

**True or False – If False give the correct answer**

Analgesics are the substances that lower the temperature during fever

Concept: Antipyretic

**Match the following**

1. | Antipyretic | reduce pain |

2. | Analgesic | reduce body temperature |

3. | Antacid | spontaneous combustion |

4. | Phosphorus | ORS Solution |

5. | Carbon – di – oxide | leads to respiratory problem. |

Concept: Antipyretic

**State whether true or false. If false, correct the statement.**

The SI unit of electric current is kilogram.

Concept: International System of Units (SI System)

**State whether true or false. If false, correct the statement.**

Kilometre is one of the SI units of measurement.

Concept: International System of Units (SI System)

What is the full form of SI system?

Concept: International System of Units (SI System)

Write the need of a standard unit.

Concept: International System of Units (SI System)

What are the main constituents of dettol?

Concept: Antiseptic

Why do antiseptics differ from disinfectants? Give one example of each.

Concept: Antiseptic

Rulers, measuring tapes and metre scales are used to measure ______

Concept: Measurement of Length

**Match the following.**

1. | Length | kelvin |

2. | Mass | metre |

3. | Time | kilogram |

4. | Temperature | second |

Concept: Measurement of Length

**Assertion (A):** Distance between two celestial bodies is measured in terms of light year.

**Reason (R):** The distance travelled by the light in one year is one light year.

Concept: Measurement of Length

Can you find the diameter of a thin wire of length 2 m using the ruler from your instrument box?

Concept: Measurement of Length

**Numerical Problem.**

Inian and Ezhilan argue about the light year. Inian tells that it is 9.46 × 1015 m and Ezhilan argues that it is 9.46 × 10 12 km. Who is right? Justify your answer.

Concept: Measurement of Length

**State whether true or false. If false, correct the statement.**

One Celsius degree is an interval of 1K and zero degree Celsius is 273.15 K.

Concept: Temperature