831: What is the maximum number of pieces of 5 cm x 5 cm x 10 cm cake that can be cut from a big cake of 5 cm x 30 cm x 30 cm size ?

(a) 10
(b) 15
(c) 18
(d) 30
832: The Standing Committee of State Finance Ministers recommended in January 2000 uniform rates across the States in respect of

(a) value-added tax

(b) sales tax

(c) stamp duty and registration fees

(d) agricultural income tax
833: Consider the following statements :

1. Balaghat is known for its diamond mines.

2. Majhgawan is known for its manganese deposits.

Which of the statements given above is/are correct?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
834: Where does exchange of gases (O2 and CO2) take place in our lungs ?

(a) Alveoli

(b) Bronchi

(c) Pleura

(d) Trachea
835: The basic reason for the extraordinary sparkle of a suitably cut diamond is that

(a) it has a very high transparency

(b) it has a very high refractive index

(c) it is very hard

(d) it has well-defined cleavage planes