You may get 1:1 limit, but it is not guaranteed.
As per rbi master directive
As holding several credit cards enhances the total credit available to any consumer, card-issuers shall assess the credit limit for a credit card customer taking into consideration all the limits enjoyed by the cardholder from other entities on the basis of self-declaration/credit information obtained from a Credit Information Company, as appropriate. This shall be uniformly applied as per the board approved policy of the card-issuer.