81. Assertion (A) : Increase in agricultural production in China has been due to higher per hectare yields.
    Reason (R) : China accomplished socialist transformation in all branches of economy, including agriculture.
    Code
    

1. 1. Both (A) and (R) are true and (R) is the correct explanation of (A)
      

   
   
   

   2. Both (A) and (R) are true but (R) is not the correct explanation of (A)
      

   
   
   

   3. (A) is true but (R) is false
      

   
   
   

   4. (A) is false but (R) is true
      

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

---

82. Match List - I with List - II and select the correct answer using the codes given below the lists
    

    	List - I		List - II
    F.	Shifting cultivation	1.	Pygmies
    G.	Pastoralism	2.	Eskimos
    H.	Hunters and food gathers	3.	Kirghiz
    J.	Hunters	4.	Rengmas

    Code :

    	F	G	H	J
    A.	1	2	3	4
    B.	1	3	2	4
    C.	4	1	3	2
    D.	4	3	1	2

1. 1. A.

   
   
   

   2. B.

   
   
   

   3. C.

   
   
   

   4. D.

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

---

---

83. Match List - I with List - II and select the correct answer using the codes given below the lists
    

    	List - I (Growing Rainfall (cm) Condition) Temp (°C)	Rainfall (cm)	List - II (Name of Crops)
    F.	20-26	above 150	1.	Cotton
    G.	10-20	50-75	2.	Rice
    H.	25	75-100	3.	Rubber
    J.	21-27	100-150	4.	Sugarcane
    			5.	Wheat

    Code :

    	F	G	H	J
    A.	3	1	5	4
    B.	4	5	3	2
    C.	2	3	1	5
    D.	2	5	1	4

1. 1. A.

   
   
   

   2. B.

   
   
   

   3. C.

   
   
   

   4. D.

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

---

84. Consider the following areas
    1. Central Africa.
    2. Borneo and Papua-New Guinea.
    3. Amazon basin.
    In which of the above areas is the primitive agriculture such as shifting cultivation or rotational bush-fallow type of cultivation found ?

1. 1. 1 only

   
   
   

   2. 1 and 2

   
   
   

   3. 2 and 3

   
   
   

   4. 1, 2 and 3

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

---

---

85. Consider the following statements
    Tropical crops which are in great demand in Anglo-America and Europe, are produced in great variety and volume in Latin America and Africa because of
    1. Availability of cultivable land and suitability of soil conditions.
    2. Combination of climatic and topographical conditions.
    3. Lack of mineral resources for trading purpose.
    4. Non-existence of agro-based industries.
    Which of these are correct ?

1. 1. 1 and 2

   
   
   

   2. 2 and 3

   
   
   

   3. 1, 3 and 4

   
   
   

   4. 2, 3 and 4

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

---