Skip to main content

X CBSE | NCERT Carbon and Its Compounds - Test Paper

1. If the pH of water is two, out of soap and detergent which one will you usefor cleaning clothes? (1)

1. Name the compound CH3COOC2H5.Name the acid and alcohol from which it is made .write equation.

2. An organic compound X with a molecular formula C2H6O undergoes oxidation with in presence of Alkaline  KMnO4 to form a compound Y. X on heating in presence of conc. H2SO4 at 443k gives Z which on reaction with H2O in presence of H2SO4 gives back ‘X’ ‘Z’ reacts with Br2 (aq) and decolorizes it.
Identify X, Y &Z and write the reactions involved. (3)

3. An organic compound ‘A’ is widely used as a preservative in pickles and has a molecular formula C2H2O2 .This compound reacts with ethanol to form a sweet smelling compound B.
(i) Identify the compound A.
(ii) Write the chemical equation for its reaction with ethanol to formcompound ‘B’
(iii) How can we get compound ‘A’ back from B?
(iv)Name the process and write corresponding chemical equation (3)

4. Hydrocarbons X and Y have melting points-1900 C & -900 C respectively.Which one of these has minimum carbon in the molecule &why? (2)

5. Three bottles without labels contain alcohol, ethanoic acid and soap solution separately how will you test which bottle contains what. (3)

6. A compound X has molecular formula C4H10.It undergoes substitution reaction more readily than addition reaction. It burns with blue flame and is present in LPG. Identify ‘X’ and give the balanced equation for its combustion and substitution reaction with Cl2 in the presence of sunlight. (3)

7. A compound ‘A’ works well with hard water. It is used for making shampoos and products for cleaning clothes. A is not 100%biodegradable and causes water pollution. ‘B’ does not work well with hard water. It is 100%biodegradable and does not create water pollution. Identify A&B. (1)

8. Can we use sodium metal for drying alcohol, why? (2)

9. Complete and balance following equation:-
a) CH2=CH2 + H2  --Heat---------->
b) CH4+O2   --------------------à

10. Two alkanes A and B have 4 and 6 carbon atoms respectively in their molecule. In which physical state will they occur at room temp?
i) Give a test that can be used to differentiate chemically between butter and cooking oil.
ii) How will you distinguish between ethanol and ethanoic acid by a suitable chemical test? Write chemical reactions involved.
ii) Complete the following reactions :-
a) CH3COOH + NaHCO3 --coc. H2SO4-------->
b) HCOOH + CH3OH-------------->
c) CH3COOC2H5 + H2O----------->

MCQ MULTIPLE TYPE QUESTIONS

Q1. Which of the following is not a saturated hydrocarbon?
i) cyclohexane.         
 ii)benzene.               
 iii)butane                
 iv)isobutene

Q2.The bond between two identical non matalic atom has a pair of electron?
 i) un equally shared between two atoms.     
 ii) transferd completely from one atom to another. 
iii) with identical spins                     
iv) equally shared between them.

Q 3. Covalent compounds are genarily
i) solubal in water    
ii)insolubal in water      
 iii)ionize in water   
iv)hydrolyse in water

Q 4. Propane with the molecular formula C3H8 has
i)7covalent bonds               
ii)8 covalent bonds               
 iii)9 covalent bonds           
 iv)alcohol

Q5. A hydrocarbon reacts with ammonical cuprons chloride Solution to form a red pricipate .The hydrocarbon is
 i)ethane                
ii)ethane                 
 iii)2-pentyne              
 iv)1-propyne

Q6.Which of the following substance is added to denature Ethanol?
i)methanol               
ii) pyricline      
iii)copper sulphate           
 iv)all of them

Q7. Which of the following is not an allotropic form of carbon
i)fluronie               
ii)fullerence                
iii)diamond            
 iv)graphite

Q8.Detergents are sodium or potassium salts of long chain of ;-
i)aldehydes         
 ii)ketones                 
 iii)carboxylic acid     
iv)sulphonic acid

Q9.Which of the following represents the correct increasing order Of unsaturated carbon ?
 i)alkanes , alkenes , alkynes                               
 ii)alkanes , alkaynes , alkenes
 iii)alkenes , alkynes , alkanes                        
 iv)alkynes , alkanes , alkenes
Q10. In double covalent bond there is sharing of
 i)2 electrons       
 ii)4 electrons                  
 iii) 6electrons                  
 iv)3 electrons

Links For   CBSE Class X Science Term-II
For Solved CBSE Exam questions Visit  Read more

Comments

CBSE ADDA :By Jsunil Sir : Your Ultimate Destination for CBSE Exam Preparation and Academic Insights

Class 10 Chapter 02 Acid Bases and Salts NCERT Activity Explanation

NCERT Activity Chapter 02 Acid Bases and Salt Class 10 Chemistry Activity 2.1 Indicator Acid Base Red litmus No Change Blue Blue Litmus Red No change Phenolphthalein Colourless Pink Methyl Orange Pink   Yellow Indictors are substance which change colour in acidic or basic media. Activity 2.2 There are some substances whose odour changes in in acidic or basic media. These are called olfactory indicators. Like onion vanilla, onion and clove. These changes smell in basic solution. Activity 2.3 Take about 5 mL of dilute sulphuric acid in a test tube and add few pieces of zinc granules to it. => You will observe bubbles of hydrogen gas on the surface of zinc granules. Zn + H2SO4 --> ZnSO4 + H2 => Pass the Hydrogen gas through the soap solution. Bubbles formed in the soap solution as Hydrogen gas it does not get dissolved in it

Living science ratna sagar class 6 solutions

Ratna sagar living science 6 answers by jsunil. Class6 Living science solution Term-1 Living Science Solution chapter-1 Source of food Download File Living Science Solution chapter-2 Component of food Download File Living Science Solution chapter-3 Fibre to fabric Download File Living Science Sol ch-4 Sorting of material into group Download File Living Science Soln ch-5 Separation of substance Download File Living Science Solution chapter-6 Change around Us Download File Living Science Solution ch-7 Living and Non Living Download File Living Science Solution ch-8 Getting to Know Plants Download File Living Science Sol ch-9 The Body and Its movements Download File Visit given link for full answer Class6 Living science solution Term-II

Class 10 Metal and Non MetalsChapter 03 NCERT Activity Solutions

X Class 10 NCERT Activity Explanation Class 10 Metals and Non Metals Activity 3.1 Page No. 37 Take samples of iron, copper, aluminium and magnesium. Note the appearance of each sample. They have a shining surface. Clean the surface of each sample by rubbing them with sand paper and note their appearance again. They become more shiny. => Freshly cut Metal have shiny surface Activity 3.2 Page No. 37 Take small pieces of iron, copper, aluminium, and magnesium. Try to cut these metals with a sharp knife and note your observations. They are very hard to cut. Hold a piece of sodium metal with a pair of tongs and try to cut it with a knife. Sodium can be cut easily with knife. Hence K and Na are soft metal cut with knife Activity 3.3 Page No. 38 Take pieces of iron, zinc, lead and copper try to strike it four or five times with a hammer. These metals are beaten into thin sheet on hammering. This property of metal is called malleability and metals are called malleable. Activity 3.4 Page

CBSE I NCERT 10th Numerical Problem solved Reflection and reflection of light

Q. 1. A concave mirror of focal length 20cm is placed 50 cm from a wall. How far from the wall an object be placed to form its real image on the wall?  Solution: V= -50 cm F= -20cm From mirror formula 1/u = 1/f – 1/v = -1/20+ 1/50 = - 3/100  U = - 33.3 cm Therefore, the distance of the object from the wall x =  50 – u X = 50 – 33.3 = 16.7 cm. Q.2. An object is placed at a distance of 40cm from a concave mirror of focal length 15cm. If the object is displaced through a distance of 20 cm towards the mirror, By how much distance is the image displaced? Answer: Here f = - 15 cm, u = - 40 cm Now 1/f = 1/u + 1/v Then 1/v = 1/f – 1/u Or V= uf/u-f =( - 40 x -15)/25 = -24 cm Then object is displaced towards the mirror let u1 be the distance object from the Mirror in its new position. Then u1 = -(40-20) = -20cm If the image is formed at a distance u1 from the mirror then v1 = u1f/u1-f = -20X-15/-20+15 = -60 cm. = - 20 x-15/-20+15 = -60 cm. Therefor

Electricity numerical for class 10 CBSE Trend Setter 50 Problems

1. The current passing through a room heater has been halved. What will happen to the heat produced by it? 2. An electric iron of resistance 20 ohm draws a current of 5 amperes. Calculate the heat produced in 30 seconds. 3. An electric heater of resistance 8 ohm takes a current of 15 A from the mains supply line. Calculate the rate at which heat is developed in the heater. 4. A resistance of 40 ohms and one of 60 ohms are arranged in series across 220 volt supply. Find the heat in joules produced by this combination in half a minute. 5. A resistance of 25 ohm is connected to a 12 V battery. Calculate the heat energy in joules generated per minute. 6. 100 joules of heat is produced per second in a 4 ohm resistor. What is the potential difference across the resistor? 7. An electric iron is connected to the mains power supply of 220 V. When the electric iron is adjusted at minimum heating’ it consumes a power of 360 W but at ‘maximum heating’ it takes a power of 840 W. Ca