pH of Soil

Q.

What is the chemical formula for an antacid?

Q.

Factory waste is neutralized before disposing it into the water bodies.

1. True

2. False

Q.

Is toothpaste an acid or base?

Q.

Question 5

When the soil is too basic in nature, plants do not grow well in it. To improve its quality what must be added to the soil?
(a) Organic matter
(b) Quicklime
(c) Slaked lime
(d) Calamine solution

Q.

Lime can be added to reduce the alkalinity of soil.

1. True

2. False

Q.

A farmer was unhappy because of his low crop yield. He discussed the problem with an agricultural scientist and realized that the soil of his field was either too acidic or too basic. What remedy would you suggest to the farmer to neutralize the soil?

Q.

When we apply baking soda solution on an ant or bee sting, it gets cured. But, soap solution is also a base and if we apply to it why does the sting doesn't get cured?

Q.

What do you understand by soil treatment? [5 MARKS]

Q.

Question 16

While playing in a park, a child was stung by a wasp. Some elders suggested applying a paste of baking soda and others lemon juice as remedy. Which remedy do you think is appropriate and why?

Q.

Which of the following chemical is used to neutralize the basic nature of soil?

1. Quicklime

2. Organic matter

3. Baking soda

4. Slaked lime

Q. What is the chemical formula of soft soap?
a)CH3COONa
b)C17H35COOK
c)HCOOK
d)C4H9COOK

Q. What is milk of magnesia

Q. Which of the following is used to neutralise the basic nature of soil?

1. Quicklime
2. Slaked lime
3. Baking soda
4. Organic matter

Q.

Which of the following is most suitable for the growth of plants?

1. Acidic soil

2. Basic soil

3. Neutral soil

4. Can’t be said

Q. If milk is acidic in nature then why is it recommended to pour milk on acid burns?

Q. A basic soil can be made fit for plants’ growth by adding slaked lime to it.

1. True
2. False

Q. When honeybee bites, which chemical enters in to our body?

1. Calcium formate
2. Melittin
3. Magnesium hydroxide
4. Formic acid

Q.

Which Silver Halide Is Used In Medicine?

Q. Which of the following acid is found in Nettle sting?

1. 
   

   Methanoic acid

2. 
   

   Lactic acid

3. 
   

   Citric acid

4. Tartaric acid

Q. Milk of magnesia is an/a:

1. acid
2. antacid
3. alkali
4. rock salt

Q. Which of the following substance enters our body when a red ant bites us?

1. Melittin
2. Calcium Formate
3. Magnesium hydroxide
4. Formic acid

Q.

Sushweta got bitten by an ant and started feeling a burning sensation. She immediately rushed to the kitchen to find something that can reduce the burning sensation. Which of the following(s) could be used by her?

1. Baking Soda

2. Lemon

3. Common Salt

4. Limestone

Q. Toothpaste is _________ in nature.

1. acidic
2. basic
3. neutral
4. None of these

Q.

What is the taste of baking soda?

Q. Which of the following base is preferred in the manufacture of soaps?

1. $Ca(OH{)}_2$
2. $NaOH$
3. $Sr(OH{)}_2$
4. $Cs\left(OH\right)$

Q. This section contains 1 Matrix Match type question, which has 2 Columns (Column I and Column II). Column I has four entries (A), (B), (C) and (D), Column II has four entries (P), (Q), (R) and (S). Match the entries in Column I with the entries in Column II. Each entry in Column I may match with one or more entries in Column II.
इस खण्ड में 1 मैट्रिक्स मिलान प्रकार का प्रश्न है, जिसमें 2 कॉलम (कॉलम I तथा कॉलम II) हैं। कॉलम I में चार प्रविष्टियाँ (A), (B), (C) तथा (D) हैं, कॉलम II में चार प्रविष्टियाँ (P), (Q), (R) तथा (S) हैं। कॉलम I में दी गयी प्रविष्टियों का मिलान कॉलम II में दी गयी प्रविष्टियों के साथ कीजिए। कॉलम I में दी गयी प्रत्येक प्रविष्टि का मिलान कॉलम II में दी गयी एक या अधिक प्रविष्टियों के साथ हो सकता है।

Match the Columns and choose the appropriate answer

कॉलमों का मिलान करें और सही उत्तर चुनें

	Column I कॉलम I		Column II कॉलम II
(A)	Sodium hydroxide सोडियम हाइड्रॉक्साइड	(P)	Found in soap साबुन में पाया जाता है
(B)	Ammonium hydroxide अमोनियम हाइड्रॉक्साइड	(Q)	Turns red litmus blue लाल लिटमस को नीला कर देता है
(C)	Potassium hydroxide पोटैशियम हाइड्रॉक्साइड	(R)	Turns to green on adding few drops of China rose गुड़हल के पुष्प के सूचक की कुछ बूँदों को मिलाने पर यह हरे रंग में परिवर्तित हो जाता है
(D)	Zinc carbonate जिंक कार्बोनेट	(S)	Found in window cleaner विन्डो क्लीनर में पाया जाता है

1. A-PQR, B-QRS, C-PQR, D-QR
2. A-PQ, B-QS, C-PQR, D-QR
3. A-PQR, B-QR, C-PQR, D-QRS
4. A-PQR, B-PQS, C-PQ, D-PQRS

Q.

For what purpose do farmers add $\mathrm{CaO}$ (lime) and ${\mathrm{NH}}_4{\mathrm{NO}}_3$ to their felids? Why are they never added together?

Q. $X+H_{2}O\to Y$.

1. $X=HCl,Y=NaOH$
2. $X=N{H}_{4}OH,Y=N{H}_3$
3. $X=N{H}_3,Y=N{H}_{4}OH$
4. None of these

Q. Which of the following base is used in the manufacturing of bleaching powder?

1. Calcium hydroxide
2. Sodium hydroxide
3. Magnesium oxide
4. Ammonium hydroxide

Q. If the soil in your garden is too acidic, then which among the following should you use to neutralise it?