Question

1. If the velocity of an object decreases with time, then it is called
(a) Retardation (b) Deceleration (c) Negative acceleration
(d) All of these
2. Identify the colloidal category of milk among the following mixtures.
(a) Emulsion (6) Sol
(c) Foam
(d) Gel
11. The states of matter can be changed by changing
(a) Temperature
(b) Pressure
(c) Both temperature and pressure (d) None of these​

Answer 1

Answer:

1 - d

2 - a

11 - c

I hope these answers would help you

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Answer 2

1.  If the velocity of an object decreases with time, then it is called retardation.

2. The colloidal category of milk is an emulsion.

3. The states of matter can be changed by changing both temperature and pressure.

Explanation:

1.  It is possible for the body's velocity to rise or fall. The term "acceleration" refers to a shift in velocity. Positive acceleration is defined as an increase in the body's velocity. Similar to this, the acceleration is considered to be negative if the velocity decreases. Negative acceleration is what retardation is. So, the correct option is (a) Retardation.
2. A colloid of two or more immiscible liquids in which one liquid has a dispersion of the other liquids is called an emulsion. To put it another way, an emulsion is a unique kind of mixture created by blending two liquids that wouldn't ordinarily mix. The word emulsion comes from the Latin word meaning "to milk". So, the correct option is (a) Emulsion.
3. Particles of matter can be brought closer together by applying more pressure. A cylinder of gas begins to compress and turn into liquid when pressure is applied to it. A gas can liquefy as a result of exerting pressure and lowering the temperature. So, the correct option is (c) Both temperature and pressure.

To learn more about acceleration, click on the links below:

https://brainly.in/question/1474020

https://brainly.in/question/5330063?msp_srt_exp=5

To learn more about emulsion, click on the links below:

https://brainly.in/question/2935057?msp_srt_exp=5

https://brainly.in/question/15987009?msp_srt_exp=5

To learn more about states of matter, click on the links below:

https://brainly.in/question/1162253?msp_srt_exp=5

https://brainly.in/question/14717220?msp_srt_exp=5

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