निम्नलिखित में से कौन अन्य तीनों की तुलना में ज्यादा सूर्य की रोशनी परावर्तित करता है?
Which of the following reflects the highest percentage of sunlight compared to the other three?
Collection of verified questions for Ooshma Avam Ooshma Gatiki under General Science. Includes previous year exam questions with official answer keys and step-by-step solutions.
Which of the following reflects the highest percentage of sunlight compared to the other three?
Food cooks faster in a pressure cooker because -
Given below are an Assertion (A) and Reason (R) - Assertion (A): The handle of a pressure cooker is made of ebonite. Reason (R): Ebonite is strong. Which of the following is the correct answer?
A corked bottle full of water breaks when frozen because -
Consider the following statements - Assertion (A): If ice accumulates on the freezer, cooling in the refrigerator is severely affected. Reason (R): Ice is a poor conductor of heat. Select the correct answer using the codes given below -
On cold winter mornings, an iron block feels much colder to the touch than a wooden block because -
On a particular day and time, the temperature in Churu was 48°C and in Shimla was 24°C. Two identical metal cups containing water were kept at 95°C in Churu and 71°C in Shimla. Which of the two cups reached room temperature first?
When ice melts, then its -
White clothes are cooler than black clothes because -
The safe temperature for keeping food fresh in a refrigerator is -
The function of a thermostat in a refrigerator is to -
Which one of the following is used as an antifreeze in automobile engines?
Given below are an Assertion (A) and Reason (R) - Assertion (A): We prefer to wear white clothes in winter. Reason (R): White clothes are good reflectors of heat. Which of the following is the correct answer?
The temperature rise from 0°C to 100°C over time for two liquids P and Q is shown (liquid P shows linear steady heating, while liquid Q shows an upward curved exponential rise reaching 100°C faster than P). Which of the following statements is correct?
The primary physiological function of sweating (perspiration) is to -
What is the purpose of a thermostat?
What is 'Absolute Zero Temperature'?
A room can be cooled by -
When a glass rod is placed in steam, its length increases, but its breadth/diameter -
Assertion (A): A piece of copper and a piece of glass are heated to the exact same temperature. Upon touching, the copper piece feels hotter than the glass piece. Reason (R): The density of copper is greater than the density of glass. Code:
To maintain the temperature of beverages inside a thermos flask, its internal walls are coated with a layer of -
If the temperature of air increases, its capacity to absorb water vapour -
When common salt is added to water, which of the following changes takes place?
Which of the following statements is not correct?
When soggy biscuits are kept inside a refrigerator for some time, they become crisp because -