The correct option is 2 and 3 only.
Explanation
The Indus Valley Civilization produced a large variety of pottery, primarily wheel-made. It is broadly classified into plain and painted ware, with the painted variety being distinct for its specific color schemes and aesthetic forms.
- Statement 1 is Incorrect: The standard painted pottery of the Indus Valley is known as "Red and Black ware." It typically consists of a fine coating of red slip on which designs are executed in glossy black paint. The statement incorrectly reverses this description by suggesting a black slip with red designs.
- Statement 2 is Correct: Polychrome pottery (pottery decorated with multiple colors) is rare in the Harappan context. It typically comprises small vases decorated with geometric patterns in red, black, green, and occasionally white and yellow.
- Statement 3 is Correct: The structural aesthetics of Harappan pottery favor fluidity. Graceful curves are the rule in household pottery, while straight and angular shapes are considered an exception.
Key Takeaway: Harappan painted pottery is predominantly Red and Black ware (red background with black designs). Polychrome pottery is rare, and the shapes are characteristically curvilinear rather than angular.