Career

You have to make a beginning at a smaller level and gain practical experience. Chemistry is not directly related to machines. So, begin somewhere and learn the processes.

As you are thinking about CS with interior decoration, so you may be interested in computer related designing. Combining both, you can go for web designing or architecture. If you are not interested in the two options mentioned above then pursue B.Tech as interior decoration is no big deal if you have a good knowledge of decoration after completing B.Tech, you can learn interior decoration. Please do a certificate or Diploma from a good institute. It all depends on your interest, finance and artistic talent.
Best of luck.

To become a good programmer, first, gain some basic computer knowledge or pursue courses like DCA/PGDCA. PGDCA is the best course because it covers basic+C and C+ language. HTML, VB, PLT, etc. Later you can learn special C, C+ and Java. These are basic courses. After that, you can choose whichever language you want to learn on the basis of your interest and proficiency in above-mentioned languages.
Best of luck.

If you have scored 52 percent marks in class 12th (science) then you should opt for BCA or BBA. After completing BBA or BCA, you can easily apply for a government job or get placed in a good firm. You can even pursue MBA after completing BCA or BBA.

Doing MBA/PGDM is a waste of time and money as per my opinion. If you get admission in the top 10 business schools in India then it is a different story altogether. This is the era of practical knowledge, industry skills and hunger to always learn something new and trendy. I will recommend, you should invest your time and money in the international finance certifications like CFA, FRM, CMA, etc.

MBA will be a better option, but if you belong to commerce background then you can also pursue ICWA.

You can pursue PGDCA to make your career in the IT field.

If you want to make your career in the computer science field then you should pursue PGDCA.

No, you only need to learn about hair styling methods. You should take admission in a good institute for the same.

You should go ahead and take it up. If you work for 2 years in the sales profile you will get practical exposure of the retail banking products of ICICI bank. After getting this exposure you can study something known as business analytics. After acquiring the knowledge of sales domain, you can learn analytical tools based on statistics like R programming language, SAS, Tableau and plan your career ahead as a data analyst in sales domain. In order to grow, you need to become an expert in sales, first.