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तमिलनाडु बोर्ड ऑफ सेकेंडरी एज्युकेशनएसएसएलसी (अंग्रेजी माध्यम) कक्षा ६

______ gas causes tears in our eyes while cutting onions. - Science

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प्रश्न

______ gas causes tears in our eyes while cutting onions.

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उत्तर

Propanethial s-oxide gas causes tears in our eyes while cutting onions.

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अध्याय 3: Chemistry in Everyday Life - Evaluation [पृष्ठ ४४]

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सामाचीर कलवी Science - Term 3 [English] Class 6 TN Board
अध्याय 3 Chemistry in Everyday Life
Evaluation | Q II. 1. | पृष्ठ ४४

संबंधित प्रश्न

State whether the following statement is true or false. In case a statement is false, write the corrected statement.

Iron pipes coated with zinc do not get rusted easily.


How do the following help in bringing about a chemical change?

pressure.


What are chemical reactions?


 Fill in the blank

A new substance is formed in a _______ change.


Write true or false .
A black residue is formed when sugar is heated .


Name the type of chemical reaction shown by the following equation:

Fe + CuSO4 → FeSO4 + Cu


Complete the statement by filling the gaps using appropriate term from the terms given in the bracket.

(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)

Rusting of iron is a ______ chemical change. 


Complete the statement by filling the gaps using appropriate term from the terms given in the bracket.

(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)

The white particles of baking soda disappear when put in lemon juice. This means that it is a ______ change.


Give an example of the following chemical change.

Two gases combine to form white solid


What is a chemical change? Give two examples of chemical change?


Explain the term ‘chemical reaction’ with special reference to – ‘reactants’ and ‘products’.


Select the correct answer for the following options:

The gas which reacts with oxygen to give a neutral liquid.


Complete the statement by filling in the blank with the correct word:

The reddish-brown precipitate obtained during a double decomposition precipitation reaction between an iron salt and alkali is __________.


Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.

Calcium hydroxide.


Heat may evolve or be absorbed during a ______ change.


______ occurs in the absence of air and in the presence of micro-organisms such as yeast.


Which is used as a catalyst during the process of hydrogenation of oils?


Give an example where heat, light, and sound are produced during a chemical change.


______ is the chemical name of slaked lime.


Acid rain is a result of ______.


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