B.Sc

Hello,
You can apply for the M.Sc in MLT, as you have completed B.Sc in MLT you can apply for this course.

Hi,
Yes, you can do B.Tech after B.Sc, and you have two options for taking admission in B.Tech colleges first one is on the basis of your performances in B.Sc. And, if you have around 60% marks then you can easily get direct admission. Second option is you can give entrance exam for lateral entry scheme.

Hello,
Please visit this link:
https://www.shiksha.com/hospitality-travel/resources/nchmct-college-predictor

After B.Sc in Zoology, you can surely go for M.Sc in Life Science, but only if you secured 50% marks or above.
For Admission procedure details in MU Kalina just follow this link:
https://www.shiksha.com/university/university-of-mumbai-kalina-campus-51598/admission
God Luck.

Yes, you can get admission in the Punjab University, since this is a private university.

There is no government college in Himachal Pradesh, which offers B.Sc in chemistry. There are six private colleges which offers B.Sc in chemistry.
https://www.shiksha.com/science/colleges/b-sc-chemistry-colleges-Himachal-Pradesh
Hope it helps you well.

Nope, unfortunately you cannot do so as DU has the guideline to get include only the Science subjects as in physics, chemistry and biology along with English for the calculation of best of 4 subjects for B.Sc. In any Science related stream. All the best !