Question 1. How much money will be required to buy 400, Rs. 12.50 shares at a premium of Rs. 1? Solution :It is given that,Number of Shares to buy = 400Nominal value of per share = Rs. 12.50Premium per share = Rs. 1Money required to buy a share = Rs. 12.50 + Rs. 1 = Rs. […]
Continue Reading
Question 1. Manish opens a Recurring Deposit Account with the Bank of Rajasthan and deposits Rs. 600 per month for 20 months. Calculate the maturity value of this account, if the bank pays interest at the rate of 10% per annum. Solution :It is given that,Deposit per month (P) = Rs. 600Number of months (n) = […]
Continue Reading
Question 1. For the following transaction within Delhi, fill in the blanks to find the amount of bill: MRP = Rs. 12,000, Discount % = 30%, GST = 18%Discount =Selling price (discounted value) = CGST =SGST = IGST =Amount of Bill = Solution :It is given that,MRP = Rs. 12,000Discount Percentage = 30%GST= 18% Calculation […]
Continue Reading
Exercise – 7 (A) Question 1: Name the three classes in which elements are classified. Which was the first metal used by man?Solution 1:Metals, non-metals, and metalloids are the three classifications in which elements are categorized. The first metal that utilized by humans was copper. Question 2: Name the metal which is a constituent of:(a) […]
Continue Reading
Question 1. Define the following:(i) Population(ii) Sanitation(iii) Deforestation(iv) Birth control(v) Rhythm method(vi) Abstainence(vii) Test-tube baby(viii) Birth rate(ix) Death rate(x) Population density(xi) NatalitySolution 1:(i) Population: The total number of individuals of a species found in a given area is referred to as the population.(ii) Sanitation: This refers to the creation and implementation of public health measures.(iii) Deforestation: […]
Continue Reading
Question 1. Name the following:(i) Gland secreting growth hormone(ii) Growth hormone(iii) Hormone regulating metamorphosis(iv) Gland secreting insulin(v) The largest endocrine gland(vi) Gland secreting adrenaline(vii) Anterior lobe of pituitary(viii) Posterior lobe of pituitary(ix) The hormone that controls the basal metabolic rateSolution 1:1. Pituitary gland2. Somatotrophin3. Thyroxine4. Pancreas5. Liver6. Adrenal gland7. Adenohypophysis8. Neurohypophysis9. Thyroxine Question 2. Give the special function […]
Continue Reading
Intext– Question-1 Question 1: Fill In The Blanks: (a) Powdered sodium chloride (common salt) does not conduct an electric current, but it does so when ……………. or when ……………..(b) Molten lead bromide conducts electricity. It is called an It is composed ofLead ……………. and bromide …………….. The lead ions are charged and arecalled …………….. The bromide […]
Continue Reading
Question 1: Write the probable colour of the following salts.(a) Ferrous salts(b) Ammonium salts(c) Cupric salts(d) Calcium salts(e) Aluminium salts Solution 1:(a) Ferrous salts : Light green(b) Ammonium salts : Colourless(c) Cupric salts : Blue(d) Calcium salts : Colourless(e) Aluminium salts : Colourless Question 2: Name:(a) A metallic hydroxide soluble in excess of NH4OH.(b) A […]
Continue Reading
Intext – Question- 1 Question 1: What do you understand by the terms acid and base?Solution 1:(a) Acids are defined as substances that contain one or more hydrogen atoms and form hydronium ions (H3O+), the only positively charged ions, when dissolved in water.(b) Hydroniumion(c) H3O+ Question 2: Explain the formation of hydronium ion. Write the ionization of […]
Continue Reading
Intext – Question- 1 Question 1: How do atoms attain noble gas configuration?Solution 1:Atoms attain noble gas configuration when their outer most shell is completely filled with the required number of electrons. To achieve a noble gas configuration, atoms usually lose, gain, or share electrons. Question 2: Define:(a) a chemical bond(b) an electrovalent bond(c) a […]
Continue Reading