The molecular formula for Magnesium bromide is ………………………… .
- A(а) MgBr
- ✓MgBr2
- CMg2Br2
- DMg2Br
Answer: B.
View full solution →Question types
Substances in Common Use question types
201 questions across 15 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
201
Questions
15
Question groups
5
Question types
01
Write the Correct Alternative.
21 Q→02Find the odd one out.
6 Q→03Write the following Statement Is True Or False. & Write True Statement.
19 Q→04Answer the following in one sentece.
2 Q→05Name The Following.
15 Q→06Answer the following questions in detail.
23 Q→07Distinguish Between.
2 Q→08complete the Graph/Table.
2 Q→09Answer the following question.
39 Q→10Answer the following question.
22 Q→11Give scientific Reasons For The Following.
16 Q→12Fill In The Blanks.
17 Q→13Match The Columns/pair.
1 Q→14Complete The Correlation.
15 Q→15Observe The Picture And Explain.
1 Q→Sample Questions
Substances in Common Use questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Soap is ………………………… in nature.
- Aradioactive
- Bnatural
- Cacidic
- ✓basic
Answer: D.
View full solution →Molecular formula of sodium bicarbonate is ………………………… .
- ✓NaHCO3
- BNa2HCO3
- CNa2HCO2
- DNaHCO2
Answer: A.
View full solution →Strong odour in swimming pool is due to ………………………… .
- ✓chlorine gas
- Bimpurities
- Ccalcium carbonate
- Dcalcium hydroxide
Answer: A.
View full solution →Rock salt is ………………………… in colour.
- Ablack
- Bwhite
- ✓brown
- Dblue
Answer: C.
View full solution →$Na_2SO_4, K_3PO_4, MgBr_2, HCl.$
View full solution →Boron-10, Iodine – 131, Cobalt – 60, Iodine – 123.
$Na_2CO_3.10H_2O, Na_2SO_4.10H_2O, BaCl_2.2H_2O, CaOCl_2$
View full solution →Soap, Toothpaste, Baking soda, Curd.
Strontium – 89, Strontium – 90, Radium – 223, Iodine -123.
The hard water becomes soft on adding baking soda $(NaHCO_3)$
View full solution →Bleaching powder available in market is classified on the basis of colour.
Bleaching powder is obtained by reaction of chlorine gas with slaked lime.
Bleaching powder is also called as chloride of lime.
Sodium bicarbonate is used to reduce acidity.
What is the strip shown below? What is it used for?
How are the various substances in day to day use classified from the scientific point of view?
Use of Strontium 89 and strontium 90.
Radioactive isotopes used in treatment of bone cancer.
Substance used to make hard water soft.
Constituents of baking powder.
Uses of sodium bicarbonate
Take a piece of coloured cloth. Put some saturated solution of bleaching powder on a small part and observe what changes take place in the colour of the cloth.
What are the constituents of baking powder? Where is the baking powder used?
What is porcelain? How is it made?
How is a ceramic article made?
What are the harmful effects of deodorants?
Bathing soap and Washing soap
Washing soda and Baking soda
| Column ‘A’ | Column ‘B’ |
| (1) Strontium – 90 | (a) Brain tumour |
| (2) Cobalt – 60 | (b) Hyperthyroidism |
| (3) Iodine – 131 | (c) Polycythemia |
| (4) Phosphorus – 32 | (d) Bone cancer |
| Column ‘A’ | Column ‘B’ |
| (1) Barium chloride | (a) 24H2O |
| (2) Sodium sulphate | (b) 7H2O |
| (3) Magnesium sulphate | (c) 2H2O |
| (4) Alum | (d) 10H2O |
What is sintering?
What compounds are used instead of clay for making advanced ceramic?
How is bone china made? How is it different from porcelain?
Give the properties of ceramics.
What is powder coating? Why is it done?
Explain how powder coating is done.
Why are deodorant used? Give their types and content.
What are the hazards of radioactive substances and radiation?
Give the uses of radioactive isotopes in Medical science.
Give the characteristics of alpha, beta and gamma rays.
We use anodized cooking utensils like griddles and cookers.
There are various brands of bleaching powder in the market.
Artificial colours in Rang Panchami should be used cautiously.
Overconsumption of artificial food colours should be avoided?
Alum is used in the process of water purification.
Magnesium sulphate (MgS04.7H20) is also called________
The red blood cell count increases in the________ disease
Anodizing is done by________
Melting point of Teflon is________
Excessive consumption of foods with added food colours leads to diseases like________
| Group A | Group B |
| 1. Saturated brine | a. sodium metal freed |
| 2. Fused salt | b. basic salt |
| 3. CaOCl2 | c. crystallization of salt |
| 4. NaHCO3 | d. oxidation of colour |
Borax : $Na_2B_4O_7.10H_2O$ : : Alum : ……………………………
View full solution →Baking Soda : Breads and Cakes : : Washing Soda : ……………………………
Baking Soda : $NaHCO_3$ : : Washing Soda : ……………………………
View full solution →Calcium Carbonate : $CaCO_3$ : : Magnesium bromide : ……………………………
View full solution →Curd : Acidic : : Soap : ……………………………
Explain what you see in the following picture
Powder coating
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