Attempt the following questions:
Answers
4. Hopes Apparatus is the device used to study the anomalous of water.
Answer:
Helium is matched with zero group and Horizontal rows are matched with periods.
Explanation:
(a) Noble gases are zero group elements as they have zero valencies and they cannot combine with other elements to form compounds, Helium is a noble gas, so matched with zero groups.
Horizontal rows of the periodic table are periods, so, Horizontal rows are matched with periods.
(b) Mass is the odd one out of a term, as distance, speed, and velocity all are related to the motion of the body.
(c) False, as the red color used on Rang Panchami is very dangerous because it contains a high proportion of mercury in it, this poses many risks like blindness, asthma, itching of the skin, skin cancer, permanent blocking of sweat pores, etc.
(d) Anomalous behavior of the water is studied by Hope's apparatus.
(e) Electric power can be defined as the ratio of the square of the voltage to the resistance,
Electric power, P = V²/R
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