Which of the following statements is CORRECT?

(a) When pH of rain water is less than5.6, it is called acid rain
(b) Tooth enamel, made up of calcium phosphate is the hardest substance in the body
(c) Toothpastes, which are generally basic, for cleaning the teeth can neutralise the excess acid and prevent tooth decay
(d) All the above

Which of the following is NOT MATCHED?

(a) Tamarind – Methanoic acid
(b) Vinegar – Acetic acid
(c) Tomato – Oxalic acid
(d) Orange – Citric acid

Main organ/s in the human body where the magnetic field produced is significant

(a) The heart
(b) The brain
(c) Both
(d) None

Which is CORRECT? The resistance of a conductor

1. Depends directly on its length of a conductor
2.Depends inversely on its area of cross-section of a conductor
3. Depends the material of the conductor
(a) 1 Only
(b) 2 & 3 Only
(c) 1 & 2 only
(d) 1, 2 & 3

 Which of the following statements are CORRECT?

1. India had surpassed America in steel production but was still far behind China
2.Foreign Trade Policy 2015-2020 introduces two new schemes, namely Merchandise Exports from India Scheme (MEIS) and Services Exports from India Scheme (SEIS)
(a) 1 Only
(b) 2 Only
(c) 1 & 2
(d) None

In the Constituent Assembly of India of which of the following Indian States had maximum representation

(a) Travancore
(b) Mysore
(c) Gwalior
(d) Jaipur

There are many natural materials which indicate the presence of acid or base in a solution. Which are they?

(a) Red cabbage leaves
(b) Turmeric
(c) Hydrangea, Petunia and Geranium
(d) All the above

All sensory information from our environment is transmitted in a particular process. Which is CORRECT?

(a) Dendritic tipàcell bodyàsynapseàaxon
(b) Dendritic tipàcell bodyàaxonàsynapse
(c) Cell bodyàsynapseàaxonàDendritic tip
(d) DendriteàaxonàsynapseàCell body

Which is NOT part of Female Reproductive System?

(a) Ovaries
(b) Fallopian tube
(c) Testosterone
(d) Uterus

Which of the following NOT substantiate usage of pipeline transport network?

(a) Running costs are minimal
(b) Solids can also be transported through a pipeline when converted into slurry
(c) Initial cost of laying pipelines is low
(d) It rules out trans-shipment losses or delays

 Which of the following is NOT a placer deposit?

(a) Silver
(b) Tin
(c) Platinum
(d) None