NIOS CLASS 10TH SCIENCE TMA 2020-21 ENLISH

Science & Technology (212) 

Tutor Marked Assignment

NIOS CLASS 10TH SCIENCE TMA 2020-21

1. Answer anyone of the following question in about 40-60 words.

B) What is term for the junction of one neuron and the other neuron known as? What does the end of first neuron contain?

The junction of a neuron and the other neuron is called the synapse. Explanation: Synapse is the junction of the first neuron ending with the axon and the second neuron starting with the dendrites of the neuron and separated by a gap. Synaptic junction is also named as neuronal junction.

2.Answer anyone of the following question in about 40-60 words.

A) Calculate the number of molecule present in 0.5 mole of water

A mole is about 6.022 * 10^23 of anything. So half a mole of water molecules is 3.011 * 10^23 molecules of water. 0.5 x 6.022 x 10^23 molecules of water.

3.Answer anyone of the following question in about 40-60 words.

a) Reena is suffering from high fever since night. Her aunt measures her body temperature to 390C using a celcius thermometer. But she wants to know this temperature in Fahrenheit scale before leaving for doctor's clinic. Help her to convert this temperature on fahrenheit scale.

ANS: 

The formula used for converting Celsius to Fahrenheit is 

EXPLANATION:

GIVEN:

The reading shown in the thermometer is 

SOLUTION:

Now Reena can convert the reading using the temperature calculator or she can convert 'Celsius to Fahrenheit' with following formula.

Now, Multiplying the degree reading by (9/5) and adding to 32 to give the Fahrenheit reading.

Hence by substituting the value of Celsius in the formula,  we get

4.Answer any one of the following questions in about 100-150 words

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